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
Can you define these popular missing words?
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 28, 2011