Lump is commonly used as a substitute for the word "fuck" in the animated show Adventure Time. This substitution was originally used by the character Lumpy Space Princess (often abbreviated to LSP). It was later adopted by the other characters in the show and soon became a more frequently used saying.

An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.