Is to fart on to a females face while she is sleeping and is lying on her side then loudly clap your hands in her ear she will wake up in complete fear and distress only to then smell the rancid odor floating around her face.
Should only be done after a trip to taco bell or Fajita night.
John: I gave my Wife the old Sidewaysthunderclap the other week she got up and left with the kids and the dog haven't seen her since

Mike: Yea same thing happened to one of my friends few months back why cant bitches learn to take a joke.
by joeeking August 6, 2014
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