Definitions by Jibbity Jub-Jub

Ohshitno 

An exclamation often used when something bad is about to happen, and is often said so incredibly fast that it almost doesn't sound like a word.

person 1: (about to spill staining substance on carpeted surface)
person 2: Ohshitno don't!

Ohshitno by Jibbity Jub-Jub April 8, 2015