Fratboy Sam: We don't have a table cloth, we'll just use alot of napkins.
The player must grab said base block, and yank it out the stack as fast as physically possible, in order to keep the stack stable and avoid tippage. Unless you are a certified Extreme Jenga Player™, this move is not recommended.
Uusally the result of this move is amazement from other players along with shouts of 'OH MY GOD', especially when done out of the blue. This also leaves an unstable pile, making your game of Extreme Jenga™ that little bit more extreme.
All: "Oh my god! He did a tablecloth!"