When your Mother-in-Law has a few drinks, winks at you, and pulls her shorts and underwear down to her ankles and sticks her hungry ass in the air, you rapidly become a MILF.
When my M-I-L dropped her pants and got down on all fours, well, I became a MILF, a confirmedMother-in-Law Fucker. Right in her goddamn asshole. It was GOOD.