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2.
Laughing so hard that you feel like you are growing six pack abs.
Damn dude, when milk came out of his nose i started sixpacking!
by pandasgonutsforyou September 18, 2011
 
1.
n.
The sexual act of pinching a female's taint with thumb and fingers inserted in the anus and vagina respectively, to reposition the receiver.
The porn showed the women six-packing eachother to get a better angle position for the camera.
by SirSexy January 03, 2012