ugly mug

The face of someone who is not actually ugly at all, but who acts despicably in public.

I was checking up on my boyfriend online and saw his ugly mug looking back at me from his new profile on match.com.

by La-La-Land August 31, 2011

ugly mug

Giving someone a dirty look. Looking at someone like you're mad at them.

I haven't done nothing to you....... why you be ugly muggin' me?

by Jim Hancock Productions August 28, 2006

Ugly Mug

A face that is undisputedly ugly and resembles that of a mug or cup.

"You are an ugly mug.. and that is just a normal mug."

by JENNNNNNNNNIFER January 29, 2008

Ugly mug

Someone who’s really fucking ugly

That guy named Jet is an ugly mug

by jet_vdl June 15, 2022