This could be visual artists or writers because, honestly, I've done this in both situations.
So who here has had times where you're so into setting an expression for a character that you replicate it AS you're doing it? For example, you're drawing someone frowning deeply and you realize you're furrowing your brow. Or if you're like me, your partner looks at you with confusion and asks what you're so pissed off about, lol.
I'll also put my arms/legs/torso/etc in all kinds of random positions rather suddenly when trying to figure out a pose, and I'll get weird looks. What sort of random weird stuff do you do as a creator? Share your fun stories.