Top Definition
A person that yells and swears when behind the window of a car, but when the driver they were yelling at stops their car they shut up and act like a bitch.
"That guy was a BTBA (behind the window bad-ass) , because when I stopped the car he drove off."
by MAND41 December 27, 2008

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