Jon has been into stacking a LOT recently. He has gotten some 22s and 23s recently which is very fast for him. He completely frustrates Tim and Michael, though, because he usually stacks like this:
Hands on timer, fast up, up, up, STOP to push up shirt sleeves, down stack, down stack, chat a bit about the sound of the cups, finish fast, stop the timer.
Tim keeps saying how much faster Jon could be if he could get through a stack without getting distracted by something.
So the other day we got this: (Make sure to listen to his commentary at the beginning it's super cute.)