Top definition
1. An acronym meaning "it might be bad."

2. An acronym meaning "I might be black."
Person 1: I want to date your ex. Are you ok with that.
Person 2: Don't do it: imbb.

Person: I have a large penis. Imbb.
by lsmnr November 15, 2010
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