I was doing a coffee demo one afternoon for an advertising campaign. I had been sitting for hours answering questions from customers and explaining the different coffee products available. Wbile in the middle of a demonstration all the coffee drinking completely filled my bladder to its max capacity as I felt the sudden desperate need for releif. I knew I was about to pee in my panties at any moment If I didn't excuse myself to the bathroom. But I was too embarrassed to even metion I needed to pee so desperately. Nearly beginning to pee my panties I sat there trying with all my strenght to hold it in. I placed my right hand between my legs and pressed hard against my aching vagina. the pain in my bladder got worse as the urge grew worse and I became even more desperate to let it out than I had been all day. I've never had to go pee so bad before in my life. I almost felt a spurt come out as I FARTED silently.....I was losing control fast and I knew I could not hold it much longer before I went in my panties. I tried to maintain my composure despite the intense urgent need to empty my bladder. I FARTED again a bit louder this time but still not loud enough for anyone to hear. With each fart that came out my butt the worse I needed to go pee. I couldn't bare the fact that peeing my panties was now a possibility and there was almost nothing I could do to stop it. I continued to fight it, and managed to hold it back just a bit longer as I continued to FART constantly while I answered questions. But finally I had to just give up and let go hoping no one would notice. While I sat there farting and explaining some things for customers my bladder finally just bursted as a HUGE gush of pee flooded through my panties and ran down my legs. I could feel the pee gushing out like crazy as I sat there trying to cover the sound of my high pressured squirt. I felt the relief of my bladder emptying out and the presssure going down as the pee continued to gush out in a highly pressurized squirt. For over two minutes, I sat there with pee flooding through my panties. I peed for what seemed like a lifetime. I had never gone pee so long before in my life. The puddle underneath me was beginning to grow rapidly and I still could not stop going pee despite my efforts to control it. The more I tried to contain it, the more pressure it put on my bladder forcing me to go pee even longer yet. almost three minutes had passed as I sat there continuing to pee my panties uncontrollably. Then finally I really started to pee fast as the squirt gained speed and completely flooded my panties from front to back. The rivers of pee flowed down my legs pusing the size of the puddle even larger. I could not imagine I was still going pee all this time. The gush grew larger yet into a highly jetted stream of pee squirting right through the bottom my skirt and onto the floor. I continued to squirt for another minute or so when I finally finished with a long silent FART and couple more large squirts. I felt so much better but the puddle of pee beneath me was outrageous and my panties as well as my skirt were both completely soaked. When everything was finally overwith I managed to clean up the mess on the floor and sprint for the bathroom just in time to pull down my my skirt and panties, as another huge rush of pee came bursting out of my vagina, and shooting straight down onto my panties and skirt on the floor. I didn't really care at that point....I really had to go pee again and If that meant going all over myself then that's what I would do.