Back in the glory days of college, I was friends with these two girls who were roommates. We hung out all the time, got dinner, and got drunk often. We were all pretty much always together.
A little back story here: I hooked up with girl A-- let's call her J-- a couple of times (made out, and she sucked my cock twice). Girl B-- let's call her M-- was a virgin but had been kind of curious about other girls. She kissed one once before, but nothing more than that.
Anyways, it was a Saturday afternoon, and we did one of those color run 5k things. You run a 5k race, and every so often, there were stations where people would throw colored corn starch on you, so by the end of it, you look like a unicorn's asshole. We finished the race and were driving back to their apartment to get cleaned up and go out for the night. On the ride home, I was sitting in the backseat of M's SUV, and J was in the front passenger seat. I didn't want to get M's car gross from the sweat and color powder, so I stripped down to my shirt and shorts, only leaving my tight briefs. J looked back at me with the lustful look in her eyes, even though she had already seen me completely naked, and she decided to join. M was very shocked when her two friends stripped down to just their underwear while she was driving. She looked at J in her bra and panties and then looked in the rearview mirror to see me in just my briefs.
We arrived back at their apartment and headed inside. I'm carrying my clothes and shoes in my hands, and the same with J. She couldn't keep her eyes off of my bulge in my tight briefs, and I could not resist staring at her in her boy shorts and bra.
"Why don't we jump in the shower?" J asked.
M looks at me then back to J, "Like together?"
"Yeah, we can just rinse off with our clothes," J suggested innocently.
"That's fine," M responded.
I smirked and said, "I'm in."
M stripped down to her bra and panties, as well as we all headed for the big shower in M's bathroom. She paid more for the rent, so she got the primary room with the attached bathroom.
The warm water in the shower felt great after the run. We all took turns to be closest to the faucet and try to scrub the color off our bodies. It was M's turn, and she was facing the faucet, scrubbing away. J knew what she wanted and immediately turned to me. She kissed me quickly and unhooked her own bra. She dropped her bra to the floor of the shower, exposing her medium-sized, perky tits to me, and I got hard instantly. She knelt down in front of me and to M's back and pulled my briefs to the floor and started sucking my cock. I am just as shocked as I am horny. I gave in and let the pleasure flood over me. I couldn't help but lean back against the wall and close my eyes as she was swallowing me tip to base over and over again.
"What the actual fuck!" M exclaimed. My eyes shot open, and M was staring at J sucking my cock in her shower.
J paused for only a quick second and asked, "Do you want to join us?" As she was holding my cock towards M.