Top definition
A wildcard insult. Could be racist, could be sexist- WHO KNOWS? Make sure to use it in an agressive tone or it won't infuriate whoever you're saying it to.
"Can you just shut your boonback ass up already?"

"Suck my boonback bitch"
by S Henderson May 24, 2012
Get the mug
Get a Boonback mug for your dog Riley.