A term used to describe something so wonderfull that it would be worth any sort of heinous action.
Dude1:"God amighty man,he sold me that Sig Sauer for a mere 300 beans."

Dude2:"Sheeit,that's a MOMMA SLAPPIN deal if I ever heard a one!"
by CrowTard March 10, 2006
Get the momma slappin mug.