Hem Up 

A tie up as in handcuffs. To end up caught or something/someone who get's you caught.

He wanted to smoke in his room, but i told him that is a hem up because his mom could walk in at any time.

Hem Up by Frosty Kittens October 20, 2010

hem it up 

A command; variant of shut up in response to someone else's cut down or rude remark.

i.e., "I don't care if she's handicapped, her breath stank!"
Response: "That was busted out, hem it up!"

hem it up by Hem it up, beeches! July 3, 2006