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1 definition by Minjae'sHouseofPorn

When a male is having sex with a female from behind and right before he is about to cum, he kicks out her legs from under her and yells, "Timber!" and then precedes to cum on her while she's on the floor.
"1: Man, yesterday Trevor really gave that bitch the ol' Lumberjack Slam."
by Minjae'sHouseofPorn November 18, 2009