a squared plus b squared equals c squared - A math trick that lets you figure out the longest side of a

A math trick that lets you figure out the longest side of a right triangle if you're too lazy to measure it and just want to look smart.

I used this trick to show my crush I'm smart. It worked, and now we're dating.

I used this trick in class and got called out for cheating. It was worth it.

I forgot this trick during a test. I cried.