I was the first one in the showers. Mom and Dad joined me. We were washing each other's backs when Sue and Bobby arrived. We made room for them. I finished lathering up, rinsed myself and stepped out of the shower. I figured I would get things organized for dinner.
Just after I got out of the shower, Sue dropped the soap. She bent over in front of Dad. "Better be careful, Sis, I'm still pretty horny."
Sue straightened up and grinned, "I'm pretty horny too. I don't think anyone has gotten their rocks off yet."
Mom, always practical, said there would be plenty of time to take care of everyone's concerns after dinner. I handed her a towel as she stepped out of the shower. I dried her back and slipped a hand around her and cupped one of her breasts. She turned her head and gave me a little kiss on the cheek, "None of that until after dinner."
We busied ourselves with dinner preparations. Dad finished showering and set up the bar. Sue and Bobby completed their showers and helped all of us get dinner on.
After dinner and after everything was cleaned up and put away, we headed for the hot tub. We all slipped into the tub. Sue was sitting between Bobby and Dad. Mom and I were sitting across from them. Dad jokingly commented that we could have collected a lot more firewood if we hadn't all gotten side tracked.
Then his words trailed off. Mom and I could see that Sue was jacking Dad's and Bobby's cocks under the water. Sue said, "I hope we're still going down that side track. I told you I was still pretty horny while we were showering." She stopped beating Dad's and Bobby's meat and stood up. Sue ran a finger up between her pussy lips then pinched her nipples, before sitting on the edge of the hot tub.
She spread her legs wide, then she spread her labia so Mom and I could see how wet her pink succulent pussy was. Sue slipped two fingers in and began to finger fuck herself. "I've got to get off or I'll go nuts!"
"Speaking of nuts," I said, "how about a little race?"
"What kind of race? And who's in it?' asked Bobby.
"I was wondering how fast Mom and Sue could pop your and Dad's nuts by using just their mouths."
Sue stopped fingering her pussy, "Sounds interesting. What's the prize for the winner?"
"Other than a mouthful of creamy cum, I'll eat the winner's pussy until she has an orgasm or two or three."
"Is there a consolation prize for the runner up?"
"I'll think of something to reward her for her efforts. Here are the rules. Mouths, tongues and lips only. No hands. Dad and Bobby can't face fuck. They have to keep their hands on their hips or keep their arms folded. And no fingers up the ass to press their glands."
"Who are the teams?" Mom asked.
"Rather than wife and husband, I think sister and brother." "Works for me. How about you, Sue?"
Sue licked her lips, "Works for me too." Dad and Bobby just grinned.
"Let's go inside. I want to video tape the action and time the contest with a stopwatch."
We all got out of the hot tub and dried off. Both Dad and Bobby had the beginnings of a hard-on.
When we got inside, I went to my room and found my stopwatch. Mom had the video camera loaded and ready to go. I asked Dad and Bobby to lean against the back of the sofa. I placed two cushions on the floor in front of them. After moving some other furniture out of the way so I could move around during the filming and checking the lighting, I asked Mom and Sue to get ready.
Both women kneeled in front of their brothers. Dad and Bobby folded their arms across their chests. They were both fully erect in anticipation.
"O.K. Ladies, get ready. You may hold your cock with one hand until you get your lips around it. Then, no hands. No jacking, hand twisting, stroking, or fondling of nut sacs and, especially, no index fingers up the ass!"
Mom and Sue both grasped the erect cock in front of them and held it in front of their mouths. I started the video camera, which was on a cart-mounted tripod.
"Ready! Set! Go! Ladies, suck your cocks!" I started the stopwatch.
I wished I was down there with them on my knees. Maybe later. My own cock was hard and standing erect against my stomach.
Mom slid her mouth down the length of Bobby's cock shaft. She placed her hands on her legs, just above her knees, to brace herself. She started to rock back and forth.
As her brother's hard cock slid in and out of her mouth, Bobby unfolded his arms, placed his hands on the back of the sofa, and leaned back to enjoy the blowjob being administered by his big sister.
Sue, on the other hand, reached around Dad's hips and gripped the back edge of the sofa with her hands. She slammed her mouth down the length of her brother's cock. Dad grunted and Sue gagged, slightly, as she swallowed his cock and banged her nose into his pelvic bone.
She backed off a bit as she used her arms to push and pull her upper body, and her mouth, up and down her brother's rigid cock. Sue had her lips clamped tight around Dad's cock shaft as she masturbated him with her mouth.
Mom and Bobby continued at a pace that seemed almost leisurely as Sue's mouth pistoned up and down Dad's cock. Dad said, "Get ready, Sis. Here I cum!"
Sue opened her eyes wide as she gulped down Dad's first cum wad. She opened her mouth as Dad shot another gob onto her tongue. The next wad hit on her chin. The following wads hit her neck and chest.
The stopwatch recorded four minutes and thirty-seven seconds from first suck to cumming.
One gob landed on her left tit. It ran down across her areola and hard nipple and dripped onto her thigh. I followed that gob's journey with the video. That little trip is one of the most erotic scenes that I've ever photographed or caught on video.
Mom heard Dad's remark. She stopped sucking off Bobby and watched Sue receive her creamy prize. I don't believe Mom was serious about winning the race.
