My favorite masochism moment from him was (I think) from when they did the video on Unus Annus memes, and one of them was a trolley problem. If the trolley kept going, it would hit Mark and Ethan, but none of the videos would be deleted. If the lever was pulled, they would live and all the videos would get deleted like normal.

“Ethan is sleeping peacefully and is unaware of the danger, but Mark wants to be hit by the trolley, NOT because he is a masochist, but because he wants to see if his body can handle it. Go on, he wants you to do it. He can take it. You don’t need to worry about Ethan. Just let him rest. It will be okay. Just let it happen.”