I was just watching A MISSED FORTUNE, and right after the women get water thrown on them and go to change, the Boys do a dance. Moe does his usual jumping and clicking his heels, but on the 2nd click, Moe falls right on his side. He really gets some height, too.
He does not break his fall in any way, as slapstick falls are generally done. If it was a planned fall, he would have put his arm or his leg down to break the fall. I slowed this down and looked! Moe seems to be in a little bit of pain, too!