I've since told most of my friends this so it's not as embarassing as it used to be, but it took a long time for me to tell anyone this story.
Back when I was first hanging out with this girl I've now been dating for like 7 years now, we went to a mutual friend Dave's birthday party. Dave's house was about a 20 minute drive on the highway (San Jose >> Los Gatos).
I drove both this girl and myself out to the house where we hung out for a while and then someone made some decision to go to some park of some sort (I forget why really). A large group of us all drove out to the damn place somwhere in Santa Cruz. My 'date' and I got hungry on the way there from Dave's and we made the mistake of grabbing some McDonald's. So, after we ate, we arrived at this park and BOOM. I have got to shit and I have got to shit RIGHT NOW. This was during the very beginning of this relationship. We hadn't even become "girlfriend/boyfriend" yet and I was still nervous and extremely shy about everything around her so this was a very bad situation.
I went hunting for a public restroom in the immediate vicinity for walking was almost an impossibility while keeping the fluid poo inside me. Found one! Nope, it was after sunset so it was locked up, and I was getting pretty bummed out at this point because I was about to crap right in my pants. Not only was I with this hot girl that I was in love with, I was also at some park far from home with a bunch of people/acquaintences for a friend's birthday. I was trying my hardest to figure something out to get out of there as soon as humanly possible. Apparently God smiled upon me because, right then, some cops came by and kicked us out for being at a public park after sunset (when they officially "close"). So, this girl and I start heading home and I am so psyched.
"I forgot my purse at Dave's..." Ohmygod. I was forced to make a large detour off of our straight route home to go back to this friend's house (where no one was going to be home because they went elsewhere after the park) and hope to somehow get her purse back before I shat all over the place. We get there and I park and struggle to pry and lift myself out of my Camaro's bucket seats and stand uncomfortably, clenching my asscheeks together, leaning over the roof of my car, acting as cool as possible while I say "I'll wait at the car." She walks 20 feet over to the house and manages to get her purse from Dave's sister who, thank bajeesus, was home.
Finally! We're driving the longest 20 minutes of my life back home so I can drop her off and go spray poo all over the place, I just needed to hold it long enough to not ruin my chances with her. We pull up to her house. At this stage, we usually had a little short chat and then parted ways when I dropped her off at home. So I tried my fucking damnedest to act normal regardless of the critical status of my asshole. Then, she goes in for a kiss.
We kiss. It is during this wonderful (and memorable) smooch goodnight that I completely filled my pants with liquid feces. My eyes were as big as golf balls. Oh but was she ever oblivious to the horrifying mess I just created in my jeans while our lips and tongues met and her eyes remaned innocently closed. I broke the kiss off, as playfully as I could pretend, and tried to rush her the hell out of my car before the atrocious odor hit her nostrils. Luckily, I succeeded in hurrying her out without bumming her out too bad.
This was the fastest drive home from here on. I didn't once slow down for any of the 6+ stop signs on the way from her house to mine. Ruined 1 pair of boxers. Ruined one pair of jeans. Trickled down and ruined 1 sock. Lastly it created a nice little stain on my grey cloth seat upholstry in my otherwise flawless Z28. 1 full roll of toilet paper later the worst night of my life was over.
At least she thought it was funny 5 years later when I finally told her. Whew.