thom·as [tom-uh
s] -adjective, thom·as nast
-adjective
1. ugly or unattractive; unpleasant to look at; offensive to the sense of beauty: Did you see Neal’s new girlfriend? She’s thomas!
[Origin: 2003, Pittsburgh, PA. At a house party, it was observed that certain attendees were nasty in appearance. This lead to an association with the name of Thomas Nast (a nineteenth century political cartoonist). Said individuals were then referred to as "thomas nast," which was soon shortened to "thomas"; see Chick Chick Boom, for antonym see Squirrel]
formatting shamelessly stolen from dictionary.com
man i totally forgot about chick chick boom.