Loose Monday
As you’re penetrating the ring that separates inner from outer from an angle that maximizes the gape of the vagina, prompting the inevitable “grrrrr Mondays” sentiment of the receiving party.
Dude 1: “Dude, Courtney could not walk this morning! You must have given her that loose monday!”
Dude 2: “Yeah, it was the loosest!”
Dude 2: “Yeah, it was the loosest!”