mum proof

A way of talking so that your mum doesn't know what you're on about.

Bwoi: "Yo momma, me is goin' down St John's wit mi posse, hang out an shark da-day."
Mam: "Errrr ... half past two?"
Bwoi: "Ehh!! Mum proof!!"

by Lord Ass July 02, 2005