1 definition by A Wise Advisor
The ultimate cock block. Farting while making out in human form. A Mary Ann will do at all possible to prevent you and your date from being alone or having a good time.
"So yeah, I got permission to go with my girlfriend on their camping trip, but I have to sit with a seat between us and sleep in a different tent with her brother."
"Oh shit, grab your shotgun. We've got a Mary Ann on our hands."
"Oh shit, grab your shotgun. We've got a Mary Ann on our hands."
by A Wise Advisor August 19, 2011