meaningmeaning-in-contextslangword-meaning
This short dialogue is from the movie Nick and Norah's Infinite Playlist:
Norah: He's a complete mo, look at him.
Caroline: He is not a mo. Look at how shitty he's dressed. His Supercuts haircut.
Considering this usage might be a slang, I checked Urban Dictionary but couldn't find anything that fits the context. I can only think of mo being short for modus operandi, but that is usually written as "M.O." I think.
Stoney B's definition is right; however, camp is by no means exclusive to the gay community. In its non-gay applications, it's sort of a 1960s word. In today's English you might say "over the top".
https://www.wordnik.com/words/sheep-dip : The practice within the intelligence community of assigning to agents non-intelligence or military jobs in order to disguise their source agency.
Ranchers "dip" livestock in solutions designed to kill parasites and keep them healthy.
Assigning spies common jobs is a process to "wash" them clean and make it easier for them to infiltrate an organization.
Best Answer
It's short for "homo", which is in turn short for "homosexual". Caroline cites gay stereotypes (good dressers, nice hair) and his lack of fulfilling them as evidence against Norah's assertion.