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1.
When you step on someone's flip flops
Mark was looking like a douchebag with his flip flops, so I gave him a foot wedgie
by caboj August 31, 2009
 
2.
Similar to the generic wedgie with a painful twist. To give a foot wedgie first give your victim a normal wedgie. As they cringe in pain, pull one or both of their feet back and pull the elastic band of their underwear around their toes. This will leave your victim immobilized and shrieking in pain. Your victim might have to cut/tear their underwear to free themselves. Note: works best when victims still has shoes on.
John: "Jack your gay."
Jack: "Take that back or I'll give you the worst foot wedgie of your life!"

John: "I was just kidding please don't!"
Jack: "That's what I thought."
by Leroylongballs August 04, 2014
 
3.
Derived from the word wedgie, meaning an uncomfortable tightening of underpants between the buttocks, a foot wedgie is related to the foot.

A foot wedgie can only be achieved if the victim is wearing flip flops. Like a standard wedgie, a foot wedgie can be caused through accident or prank.

In a prank scenario, the victim will be in motion, while the antagonizer walks behind them. The antagonizer will then step on the back of the flip-flop causing the victim's foot to continue in motion while the shoe is stationary, thus creating a painful sensation as the strap between the victims toes is yanked back.

It can also be caused by the victims own carelessness if the front of the flip-flop is caught under something while in motion, or rams against something low to the ground the victim didn't notice, while in motion.
To bug his sister, Johnny walked behind her and stepped on the heal of her flip flop to give her a foot wedgie.
by The *%#@~?^ Girl April 18, 2010