Top Definition
noun - the flappy piece of skin that hangs from the inside of the upper arm.
grandma gracie suffocated me with her tri flaps when she hugged me at christmas.

mrs. maple's class is hella hard because when she truns to lecture to the students while she's writing her massive tri flaps erase all the chalk off the board because she's left handed.
by jsteele December 27, 2007
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