Tie a knot in it!

School

We were sat in a English lesson with a dragon of a teacher (Miss "S") when my mate (Dave) said to me I really need a pee. Without thinking I just said tie a knot in it. This was the last straw for him and a puddle just erupted between his legs and spread all over the floor.I had to hold my feet up for over half an hour till the lesson ended. As he was pretty mean nobody mentioned this fact to him and he went home straight after the lesson and changed.

I wonder whether he ever tells anybody that at 15 he pissed his pants in a English lesson...