I didn't see Gaston do a single pushup in that video.
I could do a hundred pushups too if I only had to lean down a couple inches for each one.
The first key to a one-armed push-up is to rotate the body and get the center of gravity over the arm that is touching the ground. That's where the tourist failed completely. The guy playing Gaston probably has some dancing and/or gymnastics background.
But even if you get the positioning right it is not that easy at all to do a bunch of 4" dips that way. Try it.
