look up any word, like sex:
 
1.
Microbet is the tiny writing on the grout that separates the tile on the bathroom wall.
I was in the restroom at work the other day, and you would not believe what someone had written in microbet on the grout between the tile on the wall. It said, for a good time go to www.urbandictionary.com.
by des_per_a_do November 19, 2011