A game everyone on the planet is playing, where people are freely allowed to tackle somebody to the floor IF they shout ZIMBLEWEED before doing so. Founded in late 2009 and rose to popularity in 2010 after a facebook group was created honouring the game and its greatness.
The actual act of completing a flooring of somebody
"John zimbleweeded me!"
He tried to zimbleweed the old woman but she was too wiley