I've had something like this happen before.. Sometimes Vincent likes to fall off my arm, like he's drunk or something, and I react quickly to catch him.

He likes to grab on to stuff as he's swinging down off my arm, and sometimes I jerk, you know, natural reaction when one of your loved ones is falling. I've always been afraid of smaking his head on the table or him grabbing something and me pulling too hard. This has happened twice and he's been ok both times. I just don't hold him near anything he can grab onto if he falls.