North-Dakota Jackhammer
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.
The North Dakota Jackhammer
When two women use two double sided toys, one for each hole (bootyhole and vayjj) of each woman.
"I heard Susan and Becky did The North Dakota Jackhammer."