When having sex with your girl, and your pants are by your ankles. Having sex quick without getting undressed.
I gave my girl the Half Windsor right before my friends picked me up.
by Nate Dizzle MA March 30, 2006
Noun: When your balls feel like they are twisted after getting off of a plane and paired with jet lag. Can also happen after a long road trip, and your legs fall asleep in your car.
After that long-ass plane ride to Australia, my nuts were twisted into a Half-Windsor Knot
by Bake'EmAwayToys March 18, 2011