Definitions by PeaHead

Mum Face 

A person with a face like a mum or dinner lady; typically plain, old or generally unprepossessing.

Mum Face (n) or Mum Faced (adj) // Mom Faced (U.S)

Boy #1: That girl has a really hot body.

Boy #2: Yeah, but she's totally mum faced.

Mum Face by PeaHead October 22, 2013