I remember the time I peed for the first time in someone else's car. I was a high school graduate (19 years old) and me and 2 of my girlfriends spent the day at the beach. It was a hot Miami day and we knew we would get great tans. When we arrived at the beach, we immediately saw the no swimming signs posted on the beach (strong under tow currents). This was a bit disappointing because we usually go into the ocean to cool off (and to relieve our bladders). We brought a large cooler with beverages and sandwiches for lunch. It was very hot and I drank at least 4 cans of PEPSI. We were there for 6 hours. My 2 girlfriends visited the womens restroom up the boardwalk twice while we were there. I did not go with them because of my disdain for public restrooms. I had sweat quite a bit and I felt the urge to pee, but no where near desperate. I planned to pee through my bikini before we left while sitting on my beach towel. Another half hour passed, and I could feel the pressure building quickly in my bladder. Just when I was about to release my pee, Wendy said "let's go, I forgot to pick up my brother from his friend's house. We gathered our things and walked to her car. Standing made my condition worse and I began to realize that I was more desperate than I thought. I had to walk quickly to keep from leaking in my bikini bottoms. I was wearing a light blue bikini with jean shorts (faded blue) and sandals. It was too hot to wear any kind of top, so that's all I was wearing. I got to the car first and stood by the back door so I could have the back seat all to myself. They were slow in getting to the car, so I turned away from any onlookers and held my pee hole till they got there. I figured once I was sitting, I could hold it for the 20 minute ride to my house. I was the first stop so I wasn't worried. I don't know what happened but 5 minutes into the ride, I was totally desperate. I had to lean forward on the edge of the back seat and press my fingers into my pee hole to keep from flooding my friend's car. I also did this so they couldn't see me with my hand buried in my crotch. Suddenly, small trickles started to come out involuntarily into my bikini and shorts. It just kept trickling out no matter how I moved or what I did to stimulate my pee hole. I grabbed my beach towel from my bag and put it on the seat, then i sat on it. Within seconds, the trickles turned into big spurts. It happened so fast that I decided that maybe they wouldn't know that I leaked in my pants. About 5 minutes from my house I had to let my pee out because it was beginning to hurt. I completely peed in my pants in MY FRIEND'S CAR. When I got to my house, the towel and my pants were drenched. I looked to see if I left a spot on my friend's car seat when I got up. I did leave a very large spot. I couldn't wrap my towel around me because I could not explain why it was wet being that we never went in the water. I took my chances and walked as fast as I could to my front door. I thought I had gotten away with it until 2 hours later. Kim said "Wendy is mad at you for peeing your pants in her car!" Aparrently they both saw the huge wet patch on the back of my jean shorts and they both looked at the back seat after seeing what looked like a major peeing accident had happened to me. They saw the huge wet patch on the back seat and there could be no other explanation. I had to admit to both of them that I had in fact, peed my pants. I appologized to Wendy for peeing on her seat and she forgave me. How humiliating.