This is the most brutal tricep exercise available. Anyone willing to try this out with a couple of friends will see growth, guaranteed.
How To Do It
Lie down like you're attempting to do a regular bench press. Have a friend place a 2-board on your chest, then do 5 reps. Without racking the bar, he'll quickly switch to a 3-board, and you'll do another 5 reps. This will go on until you get to the 5-board where you'll perform as many reps as possible.
With my athletes I'll do 135, 185, 225, or 275 pounds. The important thing to know is that it's really about how many reps you get on the last board.