When a woman blocks another woman from a potential hookup with a guy. Usually involves unsubtle flirting. Oddly, women with boyfriends or hubands perpetrate the muffblock and have no romantic interest in the guy, shutting down their available girlfriend. Female version of the cockblock
I think Marryanne is totally muffblocking Allie. She walked right over and starting rubbing his shoulders and stroking his hair while Allie was talking to him.
by Clay Easton December 24, 2005