I was on a small motor-boat on a lake with 5 close friends on a birthday celebration. We all had fun and drank a lot of everything, fortunately no-one had had to drive the boat bcause we hired a captain. I was aware that the boat had no toilet, and then I was in real distress because I suddenly felt I had to go. We had champaign, beer, gin and whiskey all together and all those drinks made me feel that I had to pee really very urgently. I was in a shock as I didn´t know what to do. I had to use my fingers to push my pee hole as hard as I could, I was just unable to hold such a full bladder any longer; I could feel it getting wet down there. I whispered to my friend that I was in a very unconfortable situation and my bladder was about to totally explode. She told me that there would be no other place than going to the edge of the boat and peeing into the water, so my friend helped me balance by holding my arm after I had lifted up my miniskirt and lowered my panties. I felt reallly drunk and was afraid of falling out of the boat, just a second later I started peeing a strong hissing stream into the water. It had to be the longest pee of my life. I admit I was very shy doing it before everybody on boat but I was too drunk to realize this. You can´t imagine the relief. 10 minutes later I could not believe I had to pee again so I just tried to ignor it. Although this time my bladder didn't feel as full, the URGE from inside my pussy became so strong I knew it was going to come out. I quickly crossed a leg trying to squeeze my pee hole closed but I felt leakage so again I used my fingers and that my friend noticed so she grabbed my hand to again take me to the edge of the boat. Problem was the instant I let go pee gushed out and I just stood there totally freeked but enjoying the much needed relief.