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When you take laxatives before receiving a blowjob, and act like your about to cum (ie. moaning, toe curling) so she closes her eyes and pulls off while she awaits your hot man-chowder. then, as she is blinded by your awaiting pud-pudding you spin 180º around and spray fart all over her face.
After I gave Johanna that 180 Blowback last night she won't even trust me to mow her lawn.
by Blowback Master April 18, 2010
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