Sack

If you want to describe something that's terrible, bad, retarded, nasty, ugly, or anything like these, you call it: "Sack".

This meme was originally created by iTz HLG MoDz.

"Yo, I fucked that chick last night, but she was so sack!"

"Dude your grades are so sack."

"My teacher has got to be the biggest sack ever!".