A person who sucks up behaviors, speech, or styles that they think are cool or funny from those around him/her or in the media and adopts them as his/her own personality like a dementor eating someone's soul. This person is trying to be accepted, but most likely comes off as a douchebag, try hard, piece of shit.
Greg: "Did that dude just say your line, bro?"
Mike: "Yeah, he steals everything I do."
Greg: "Fucking social dementor."
Mike: "Yeah, he steals everything I do."
Greg: "Fucking social dementor."
by the G-Bear March 2, 2014
Get the Social Dementormug. An extreme case of Social Dementorism in which the loser sucks up another person's entire lifestyle, from wardrobe to basic personality traits
Greg: "Whoa, that kid completely stole every aspect of your being!"
Mike: "I know! He performed the dreaded Social Dementor's Kiss."
Greg: "Yeah either that, or he wants to fuck you real bad."
Mike: "True... True."
Mike: "I know! He performed the dreaded Social Dementor's Kiss."
Greg: "Yeah either that, or he wants to fuck you real bad."
Mike: "True... True."
by the G-Bear March 2, 2014
Get the Social Dementor's Kissmug.