1 definition by Tu madre.

A Pittsburgh slang term that refers to insulting someone. The word is always plural.

"Bars" is exclaimed after the delivery of an insult, never by the person who has been insulted but usually by onlookers or the insulter. One may also modify the phrase to suit a particular situation. Bars are similar to a burn or a pwn.
John: Jack, your mom is so fat that when she sat on the rainbow, Skittles came out.
Onlookers: Bars!

or...

Cindy: Lucy, you look like a man.
Onlookers: Gender bars!
by Tu madre. January 14, 2007
Get the bars mug.