1 definition by OMFGWTFBBQMAN
A mom joke is when someone makes a joke and laughs really hard at it but no one else does. It's pretty much PAST the "fake laugh joke" point.
Bob: Hey hey what did the kids say to the rabbi? Silly rabb-
Joe: Say another fucking mom joke and I'm gonna slit your throat.
Joe: Say another fucking mom joke and I'm gonna slit your throat.
by OMFGWTFBBQMAN December 17, 2007