I was 19 and a freshman in college. I was on roadtrip with my roomate (Claire) her boyfriend (Jim) and his best friend (Pete). Claire and Jim were trying to fix up Pete and I but that's another story. Pete and I were in the backseat, it was Claire's car but Jum was driving. We were on long dark road with no rest stops in sight. Pete asks Jim to pull over, saying, "I gotta take aleak". Jim refuses. I had to go to to but the idea of peeing on the road in front of these two guys was not thrilling to me. A little while later Pete asks again and Jim still refuses. Finally a sign; next rest stop 10 miles. My need to go was getting quite strong; I had actually reached desperation mode; legs jiggleing, crossing and uncrossing my legs. I didn't say anything because I assumed Jim would stop. Jim blows past the rest stop. After that I was oblivious to most of what was going on between Pete and Jim except for this comment Pete said, "Claire tell your boyfriend to pull over or I'm just gonna whip it out and piss in your car." Claire pleaded with Jim to pull over but he wouldn't. All of my effort was directed to holding my pee which felt like it was right there at my pee hole. And there it was; I felt my first squirt. Oh god not here not now, I thought. I love pissing myself but in private. I hadn't had a real true accident since I was 9. The warm wetness made it even more difficult to hold back and my bladder had to be stretched to its limit. It hurt really bad and I wondered if it could burst open. Another large squirt escaped and I felt the seat; nope, not wet; not that it mattered cause unless Jim pulled over like right now I was done for. Then Pete, true to his word, whipped out his tool and started pissing. Two more large close together squirts shot from my pussy, and then what finally made me lose it totally was when Pete aimed his stream diagnollay across from the back seat to the front and hit Jim with it. The sight and sound of Pete peeing was more than I could take. I lost it altogehter letting it all go; soaking myself and the seat beneath me. The thing is when I did it nobody noticed because of Pete's actons. I had to tell Claire because she would have noticed eventually. When we got back we dropped the guys off and Claire asked me to move upfront. I said, "that's OK it's just a shortride back to where our dorm is." After we drove a bit I felt I had to tell her; very humiliating. She promised not tell anyone as long as I paid to get my area cleaned. I felt that was fair and Claire, true to her word, never told anyone but teased me relentlessy when we were alone. I thought she would think I did on purpose when in senior year she came back unexpectedly and cought me in of my private Pee moments. She just said," O you do this on purpose now, just make sure you clean it all up and don't mix your laundry in with mine," which I never did.