1 definition by Dr. Definitionz

When your friend (usually of Italian heritage) has impromptu sex on a porch. A bone sesh on any porch, balcony, or patio where you end up having sex on the furniture, railings, or the ground.
Holy crap, that Italian girl totally took me up on a porchslam last night. Score, dude!
by Dr. Definitionz November 12, 2010
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