Top definition
The opposite of coolio. A term used to describe something you dislike or a situation that does not meet your expections.
Caitlin says "I got a haircut at Great Clips for $15. That's kind of expensive." Rachel responds "Boolio. That sucks."
by Caitlin Blissenbach February 24, 2008
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug