I had some gangmember cholo kid in the English class I was teaching a few years ago and he was upset that he got an F on his paper. He said he wanted to step outside to whip my ass... I told him to go outside and practice falling down a few times and I will be right out. The whole class busted out laughing and he turned beet red. After that he was cool... and he worked to get his paper up to a C-.