The slap given after one has commited a blasphemy, to discourage it's continued use.
Rick: "Dude, Jonas just told me that he hates Guitar Hero!"
Rob: "You called blasphemy on him right?"
Rick: "Hell yeah I did, and he got a blasphemy slap to teach him a lesson."
Rob: "Sweet."
by AtticMonster April 3, 2008
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