The act of ramming ones erect penis into any type of wall in hopes of getting some sexual pleasure (a not so great substitute for Masturbating)
Fred:"I heard john in his apartment next door doing a chick"
Bob: "John wasn't with a chick last night, his date bailed on him before he could take her to his room"
Fred: "Oh that sucks, he must have been Jack Hammerin the shit out of his wall then"
by RongMan October 06, 2010

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