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Where you are, what you're doing, who you're with, and even the time of day are all forgotten and replaced with an uncontrollable need to fap. Necessifaps are most common after extended periods without fapping.
"Hey have you seen Mike?"
"Yeah, last I heard he was headed out back behind the Tilt-A-Whirl for a necessifap, poor guy hasn't fapped in weeks."
by slayer 2364 March 18, 2010
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