I was relaxing in the bath tub and soaking some sore muscles after a long run on a lazy summer morning. Of course I was especially looking forward to seeing my daughter's friend Lisa who was coming over to visit during her freshman college break. Lisa was my favorite of all my daughter's friends. I watched her grow up and was like a second father to her. Her real dad was out of the picture and her mother never remarried.
I'd watched Lisa while relaxing by the pool the day before. I'd never before looked at her as a woman. She's about 5'6" with brown hair and big brown eyes. She'd been a track star in high school and was still in amazing shape in her first year of college. I would guess her breasts are 34c with nice hips to go with them. Her legs never seemed to end. So slender and shapely from her running. I felt like a bit of a voyeur and dirty old man for watching behind my sunglasses as my cock grew in my shorts. But what was the harm?
Later as I peeked at her safely through my bathroom window I realized just how beautiful she had become as she pranced around the pool in her bikini. To me she was absolutely perfect. My wife had been cold and avoiding sex lately, and I guess I was becoming an old pervert. I blamed my fixation on the girl on a loveless marriage to an alcoholic. Even though I'd been working out and had lost weight my wife was still ignoring me.
I turned off the bath water and prepared to get in the tub. I took a look at my old body. Looking good for my age! Only the gray chest hair kind of gave me away. I was slim and trim otherwise. I climbed into the tub and closed my eyes to fully relax. As I thought of Lisa I started to become erect and soaped up my erection. I hate to brag, but I'm bigger than average. At my age you never let a stiff cock go to waste. Might as well have some fun I thought.
I was in the middle of stroking it when I heard the door to the bathroom open and the toilet seat go down.
"Honey I'm in the tub," I said to my wife....or so I thought.
"It's me Lisa Mr. Long. I'm sorry to come in but I really have to go pee."
I then heard her peeing and unrolling some toilet paper while I lay awkwardly behind the shower curtain buck naked and feeling vulnerable with a 20 year old gorgeous girl on the other side. My erection grew harder and harder knowing a young naked co-ed was just on the other side of the vinyl screen.
"It's so good to come over and swim Mr. Long thanks for having me."
"That's okay Lisa, you can come over anytime." I replied nervously.
I heard the toilet flush and I assumed she was going to leave, and I could finish taking care of business. But I was wrong.
"While I have you in there trapped Mr. Long. I was wondering if you could peek around the curtain and tell me what you think of my bikini. I just got it and would really like to hear a guy's opinion. I wore it the other day at the beach and none of the boys seemed to even notice me."
This request seemed a bit strange since she had never asked me my opinion before. But I've been married for 25 years and my wife and daughter have asked me to comment on outfits before. Always a slippery slope for a guy.
"Well okay but I really have to get going." I lied. I still wouldn't miss an opportunity to see her model herself up close though.
I reached up and nervously pulled the shower curtain shyly back tight around my face. I couldn't believe my eyes when I saw Lisa in a small yellow bikini that contrasted with her lightly tanned skin. I looked from her long brown hair with tinted purple tips to her neon sports shoes. Her shapely butt and medium sized breasts looked amazing. She turned around slowly and angled sideways and lifted up on the balls of her feet to tighten up her calves and butt. Then she thrust out her chest. I realized she was just showing off for me and enjoying every minute of it from the subtle smile on her face.
"What do you think Mr. Long? Is it as nice as the one you watched me in out your window yesterday?" She giggled.
"Yes Lisa sorry about that. I need to keep an eye on all visitors to the pool for safety reasons." I lied.
"That's too bad Mr. Long because I thought you might be checking me out and to be honest, it made me excited to think of you watching me. I thought of it all last night. Would you like to watch me now up close Mr. Long? I've been working on some dance moves."
She began to do a little dance in her bikini as I watched. She moved like a nymph and kept eye contact with me as she ran her hands up and down her body as she slithered and undulated. She finished by wiggling her bum at me. Then she smiled and waited for a response.
"You look beautiful Lisa you must have a lot of boyfriends back at school."
"Not really Mr. Long I'm not really into boys, I think I like men better. Now pull that silly curtain back a little farther Mr. Long and I'll show you more." She whispered huskily.
"Lisa I think you've teased this old man enough for one day. I think you should go before...."
Just then she stuck out her tongue at me. "Poo" she said as she made a little noise. "I know you don't want me to leave."
She looked at me for a minute and then smiled and issued a challenge.
"Pull back the curtain to your waist and I'll take off my bikini top for you." She said hungrily as she stared into my face. "Unless you'd rather see me go."
I thought for about one second and then slowly pulled the curtain over farther. I knew it was the wrong thing to do but I was totally in her power and she knew it. My cock was swollen as hard as steel. Harder than it had been in years.