guys stop fighting you're BOTH adopted

the term used to break up any argument between friends or siblings.

2 random friends of mine: *fighting over absolutely nothing*
Me: "guys stop fighting you're BOTH adopted."
2 friends: *abruptly stops fighting*

Go ahead, if you're bad.

Slang from the south that entails whatever you are about to do is probably not going to be in your best interest. Rarely actually used in favor of other phrases, and typically only said by older folks.

Person 1: "I haven't practiced in a few years, but I'm pretty sure I can still backflip."
Person 2: "Go ahead, if you're bad."