When my dad returned from his Las Vegas getaway with his business partners he said he had an "excellent" time. He went on and on about the events of his trip and we were all very happy he enjoyed his Las Vegas getaway so much. As fun as his trip may have been, I couldn't help but think that I actually had more fun than he did, given all the sex that had been going on at the house between my mom, Aunt Kim and me.
I grabbed dad's travel bag and mom told him we planned a little backyard Bar-B-Q to celebrate his birthday, nothing special, just the four of us and some good food and drink.
Dad was beat from the minimal sleep he had gotten during his trip so he headed to his bedroom to take a nap. While dad was sleeping the three of started hanging up birthday decorations and getting things ready for the Bar-B-Q later that afternoon. Later, after dad woke up and was taking a shower, mom and Aunt Kim changed into their new bikinis, which they covered up by wearing tank tops and shorts.
When dad emerged from his room he was handed a drink and wished a happy birthday by mom. We all hung out inside for a bit, chatting and having a couple drinks. After a while dad and I got our trunks on, we freshened up our drinks, and we all headed out back. Mom and Aunt Kim headed to a couple lounge chairs and tossed their beach towels down on them as my dad and I sat in chairs at a nearby table, facing them.
Knowing what was to come, I kept an eye on my dad to see the look on his face when my mom and Aunt Kim revealed their skimpy new bikinis. Aunt Kim pulled her tank over her head then faced away from my dad, bent at the waist, and sexily pushed her shorts down, revealing her bare ass in the thong bikini bottom. She made sure to do it nice and slow for effect and I saw my dad's eyes widen at the sight of Aunt Kim's great ass. Mom then took off her tank top and shorts, revealing a bikini equal in size to her sister's. Again dad's eyes got big because I'm sure he'd never seen mom in such a tiny bathing suit.
"I'm afraid I'm a bad influence on your wife, Kevin," said Aunt Kim as they showed off their new suits. "I talked her into getting a new bikini with me when we were out shopping yesterday and I think it's a little skimpier than she's used to."
"It looks okay to me," dad said smiling, "I think you both look hot."
He looked over at me after he said that and I added, "Amen, pops."
Aunt Kim again faced away from us and bent over as she straightened out the towel on her lounge chair and dad's eyes were glued to her butt as she did. As was the plan, mom announced she was going back inside to grab some chips, dip, and finger food and she asked me to help.
Once inside we quickly got the food together and set it on the kitchen counter. We then went to the sink and peeked through the kitchen window to see what we already knew was going to happen. Aunt Kim grabbed her bottle of suntan lotion and held it out to my dad, asking him to put some on her upper back and shoulders. He took the bottle and sat down behind her on the lounge chair as he squirted some lotion out onto his hand. He put the bottle down and rubbed his hands together to spread the lotion between them, then began applying the lotion over Aunt Kim's shoulders.
I reached down and ran my hand over my mom's bare ass cheek as we watched dad smear the lotion over Aunt Kim's upper back. The lotion we had her use doesn't absorb very quickly. In order to not leave Aunt Kim's back all white from the lotion, he had to rub it in pretty well. This would take a few passes over the area where the lotion was applied so he was practically massaging Aunt Kim's shoulders to get the lotion to absorb.
After dad finished with her shoulders and upper back, Aunt Kim asked him to do her lower back and backs of her legs. Dad scooted to the edge of the lounge chair and she laid down on her stomach as he retrieved the lotion. He turned to face her lower half and squirted more lotion out onto his hand. Again he spread the lotion between his hands, then spread it out over the lower part of her back that he had not gotten to before. After finishing her lower back he scooted down to Aunt Kim's lower half and squirted more lotion out. Dad ran his hands over Aunt Kim's thong-clad ass and down her legs.
Dad probably didn't want Aunt Kim to think he was groping her because his hands quickly passed over her cheeks and he spent more time on the backs of her legs. Given the lotion we used, he had to go back to Aunt Kim's ass to rub the lotion in so before long his slick hands moved back up.
As my dad ran his hands over Aunt Kim's ass I asked my mom, "Do you like watching him running his hands over your sister's body," and I massaged her ass as I waited for her answer.
"It IS turning me on. That, plus what you're doing," she said with a smile.
"I bet he's just STARING at her butt. And he's got a major hard-on, just like I do" I said, fueling her fire as I kneaded her butt cheek.
My mom reached down and she ran the back of her hand up the length of my erection, then turned her hand over and ran her fingers up and down my cock through my trunks.
My dad finished applying the lotion and quickly stood to face away from Aunt Kim. He had a boner alright, and didn't want his sister in-law to see it as he stood up. Now that the show was over I let go of my mom's bare ass, and she let go of my erection, and we took the food outside.
Aunt Kim and my mom made sure to bend over and give my dad a good show whenever possible and his eyes were glued to their hot bodies for most of the afternoon. As it started to get dark I fired up the grill. After it was ready I went inside and got the shrimp skewers, steaks, chicken, and sausages I got. I wanted to make sure there was plenty of variety so everyone would be happy, and there would be plenty of leftovers for us to eat over the next few days.
Dad assisted with the grilling, since he considers himself a "grillmaster," and one of the times he was checking the meat Aunt Kim went over to see how it was going. She looked at the meat on the grill and as my dad manipulated a sausage with his tongs she asked, "Got anything bigger?"
Dad didn't miss a beat, saying, "Yeah, but I don't want to put it on the grill," with a smile.
"I bet," she replied with a devilish grin, "Lisa's told me..." she said, letting her words just trail off. Dad stood there holding a sausage in the tongs as he watched her ass wiggle as she walked away.
Before long we were eating the delicious food we had made and put up the remains inside. As we cleaned things up inside Aunt Kim, my mom, and I discussed how things were going. I'm sure dad was getting pretty worked up with the two of them parading around in next to nothing, and they found the suits were fairly see-thru when they got wet so he got even more of an eyeful after they went in the pool to cool. They stayed in their bikinis throughout the evening, wrapping towels around their waists once we came inside.
As the evening wore on, after watching some TV and giving dad his presents, I said I had to get to bed because I was going hiking with a friend early in the morning. I wished my dad a happy birthday and said goodnight to my mom and Aunt Kim. I then went to my mom and dad's bedroom and set the digital videocamera up on a dresser that faces the side of their. I put it behind a vase and jewelry box, with only the lens peeking out from behind it wouldn't be seen. I took the camera's remote, headed to my bedroom, and waited for mom and dad to go to bed.
I didn't have to wait all that long. I heard my mom's voice coming from the end of the hall, saying, "Come on birthday boy, I have another present for you," and they said goodnight to Aunt Kim.
Once their bedroom door closed I tiptoed over to the door and turned the camera on from the hallway with the remote. As I walked back to my room I saw Aunt Kim coming down the hallway. She quickly changed into the babydoll nightie she bought and went to mom and dad's bedroom door, waiting for the signal from my mom. I could see right through the sheer top. Aunt Kim looked incredible.
(I was able to watch what transpired in my folks' room when I watched the video the next day. What happens next was what I saw on the tape)
