When you are shaking your head you start left to right. When you are nodding your head you go up then down, amirite?

Partially true for me. I start right to left.

fact: you tried after you read it

I nod up first, then down. But when I shake my head, I start on my right.

I'm the exact opposite. Right/left, down/up.

I didn't believe you, so I tried right/left down/up. It felt weird.

i just tried that and you were right haha

left right and down up so partially true

I do right/left up/down

I do it all ways.....