Top Definition
A phrase to describe someone with a single awkward mannerism in an otherwise perfect social demeanor.
Steve: You know, Bill is a really nice dude. I can't find one single flaw in the guy's attitude.

Martin: Yeah, but when he held the door for me this morning, he gave me that weird grin of his.

Steve: Oh yeah, he's totally serial killer material.
by TBrownz August 14, 2008
8 Words related to serial killer material

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