The Urine Agi

Refers to when someone (especially a wrestler) urinates in their pants. It is a pun based on the Judo move called the Uranage, which WWE wrestlers Bray Wyatt and Samoa Joe are known for using - though some insist that those two wrestlers are, in fact, pissing themselves.

Don't scare me like that! I almost did the Urine Agi!