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2.
When you are playing rock, paper, scissors and all you give is rock. Also used when an action is seems like it would be repeated. Often you the action changes on your turn. Usually used in reflection about a game.
Bro 1: "Dude, Why did you put paper?"

Bro 2: " I don't know. I thought he was rock-sliding me."

"I thought thirteen would win, it has been played 4 times in a row, but I guess the roulette was rock-sliding me.
by J3ffisthedude June 19, 2013
 
1.
The most bad ass sport ever. After you climb a mountain on the way down you sit down and slide as fast as you can without stopping.
"Man that rocksliding was crazy huh?"
"yeah but i got a rock lodged in my back door now if you know what i mean."
by Connor Tiffany March 26, 2008