Tennis Dictionary's definitions
A "brown buster" is the term used when an individual is sodomized with the wide end of a tennis racket after a crushing defeat.
Wow, I can't believe I lost 6-0, 6-0, 6-0, that was a real brown buster, I am not going to be able to walk for weeks and I need to wash my racket.
by Tennis Dictionary June 2, 2016
Get the brown bustermug.