A fork of Rural Dictionary
Jumping into a wall as high and hard as you can, but horizontally, so your position mimics that of a gecko on a wall.
Then you hit the floor.
Sam: "time to get geckoing"
*gecko*
Matt: "That was a gecko and a half"
Pete: "I've never seen a gecko with such panache!"
Ollie: "What a gecko, that was amazing."