A surprise crapping of the pants. Usually diarrhea based, resulting from too much booze, fried foods, sweets, and cigarettes. In any combination and quantity. Onset by laughter, shock.., or compulsive swearing.
Last night was crazy! I got drunk and stuffed, and John opened his funny-ass mouth. I laughed so hard I Milwaukee mudpied myself. That's why I'm wearing ladies yoga pants.