noun: the act of neglect by someone who you were previously close with; specifically when said person you were close with ignores your birthday. (And I mean completely ignores as in the person does not send a text message or even a Facebook wall post). Often used in the phrase "pulling a hendy."
"So my Facebook wall was missing a particular birthday wish from a certain someone. It was totally a hendy move."
by Uh, Ty September 19, 2012