A fugmunster is a variation of the term 'fucking ugly'. It refers to someone who is particularly unfortunate looking or dressing in an odd fashion.
Hannah: Did you see that woman?
Kat: She's a fugmunster!
-OR-
Kat: Get out of my car Hannah, and take your fugmunster glasses with you!
Hannah: ...fine.
Kat: She's a fugmunster!
-OR-
Kat: Get out of my car Hannah, and take your fugmunster glasses with you!
Hannah: ...fine.
by kathro gonzalez October 21, 2008
Get the fugmunstermug.