one man using his errect penis to "mash" another mans dinner via his arse hole.
Julian Clarey is a "dinner masher"
by jon September 22, 2003
some body who loves to give anal sex.
After a romantic meal for two Boatyard John likes to mash Richard Newmans dinner for him via his asshole. He is a great big dinner masher.
by JPH November 27, 2003