A sexual maneuver, where when being anally fisted a person clenches their anus so tightly that the 'fister' is unable to remove their hand from the 'fistee'.
"I was fisting this Craiglist hooker when all of a sudden she gave me the rusty handcuff. I had to wear her like a sock puppet for nearly an hour."
by Ten-eight March 24, 2015
Another of the Holy Grail sex acts to be found in select porno movies. This is where a guy gets to fist two chicks in the ass at the same time. He is wearing the rusty handcuffs.
Dude 1: "Yo! I got a great new porno. This lucky bastard gets to wear the rusty handcuffs!"
Dude 2: "That's sick man. Lend me a copy."
Dude 2: "That's sick man. Lend me a copy."
by Wizards Sleeve June 16, 2007