One time, at primary (or elementary for you Americans) school, our teachers told us we had to be dismissed after eating lunch, and I really needed to use the toilet. Like, like, really. But there were no teachers around. (I was extremely obedient, and refused to go use the toilet until I got dismissed by the teacher).
I waited...
and waited...
and waited...
AND WAITED...
AND WAITED...
AND WAITED...
Until it got to the point where I didn't need to go anymore... *cough* wasn't my fault *cough*
If only my teachers knew how much respect I had for them back then.