I am a married man in my mid-30's. I'm tall, average build, with an unusually large and thick dick. My friend Jenny has invited me to join her and  her friends for Seattle's annual naked bike ride, and I'm supposed to show up at her apartment before the ride. I've always found jenny attractive, but being married would never act on it. All the same i'm secretly excited to see her naked. She's a tall, fit woman in her late 20's with long curly brown hair, small breasts, a perfect, tight, butt and long, toned, smooth legs. I arrive at her apartment, with my bike, totally naked and she lets me in. I'm the first one here. To my shock I realize she's not naked. She laughs and tells me that everyone usually strips at the ride itself, not before hand. I'm embarassed, but there is also something undeniably hot about being naked in front her while she's clothed. She's wearing short jean shorts and a tight sports bra. Her hair is up in a curly bun. I notice her check out my dick from time to time, I"m rather large. Suddenly the eroticism of the moment gets the better of me and I get rock hard. She starts laughing and making nervous jokes, trying to break the tension, but I can't seem to calm down. Things escaltae and escalate until suddenly, without touching myself, i start ejaculting, hard. It's so hard, my cum crosses the room and splatters her shirt, her hair, and her face. We stare at each other in stunned silence, her covered in my cum, me with my  dick still outrageously hard. Tell with creative prose and detail. Use dialogue and buid-up tension slowly.