While in the process of having a threesome (has to be 2 girls, one guy), the guy puts on a strap-on backwards, so it faces outwards from the buttocks. He then does it
doggie style with the girl in front, while
the other girl rides the strap-on
from the back, essentially creating a swinging pickax motion.
Brady: Dude, Nathan, I found two girls that are DTF, we're going
North Dakota Pickaxing tonight!
Nathan: Alright!
Jon: My wife said we should find another girl so we can
North Dakota Pickax tonight
Otto: Dude,
your wife rocks