The method of hanging your skateboard in your locker, done by looping a bungee cord through your trucks and hanging it around a hook.
Boy 1: Hey man, nice board.
Boy 2: Thanks, but I can't find a place to put it, it's wet and I don't wanna pay a $50 dollar fine replacing my text books.
Boy 1: Here, take this bungee cord, use the J-Method.
When a girl uses one finger to get her thong out of her ass.
Ashley: My thong is so deep in my ass
Katelyn: Use the J Method
Ashley: Damn it really works