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A person who is too gay to function
Kid 1: "He is so gay, I couldn't even carry on a conversation with him."

Kid 2: "Wow. What a slytherpuff."
by crumb1121 January 04, 2012
A Slytherpuff is a person who has the loyalty of a Hufflepuff and the ruthlessness of a Slytherin They are formidable people!
"That was a plan worthy of a Slytherpuff"
by Slytherpuff Forever July 26, 2013