Top definition
When a bro fucks another bro's pussy/ass combo sex toy unprotected after it had been used by another bro shortly before. Then without cleaning the pussy/ass combo sex toy, he stealthily replaces it back in the box under the owners bed without him knowing.......like fucking "Soap MacTavish" from Call of Duty.
Recently my buddy got a new pussy/ass sex toy combo in the mail, but before he had a chance to use it.....2 of my other buddy's gave it a good ol' Dirty MacTavish. Just to break it in for him, I would suspect. True story
by DJShOoter February 09, 2011
Get the mug
Get a Dirty MacTavish mug for your cousin Bob.