1 definition by TigerKingDick

Before hitting that ass, shaving your head except for a few strands, then bringing your bald head to her anus and trying to fit through, like a mouse desperately trying to enter a hole. Other possibles alternatives are by using your pubes to resemble whiskers and fitting your balls in her ass
My and my girl tried mouseholing last night
by TigerKingDick March 21, 2017