Top definition
A miserable heifer who has or deserves to explode.
"Did you see that horrible outfit? What a cowboom!" "He can't even hold a job, much less a relationship! Cowboom!" "Stop touching me you nasty cowboom!"
via giphy
by Jumzeee July 10, 2016
Get the mug
Get a Cowboom mug for your sister Nathalie.