Top Definition
The sexual position in which the receiving party lays on their back with their legs up and apart, and the giving party, propped up on a couch or something, gets em from the top, fast and repeatedly.
After I finished performing a North-Dakota Jackhammer on Fiona, she strapped on a dildo and did it to me.
by lewd and nude and rude HOT! April 28, 2009
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