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1.
A person who is seen to be derogatory to social standing when seen with - socially carcinogenic.
"Yo man what the hell are you doing hanging around with Daisy!?"

"I know everyone hates her...I just thought we sorta clicked,"

"Dude find your balls! She looks like a walrus..everyone hates her. She's totally a social carcinogen!"
by ExEE April 19, 2009