Do you suck your thumb

I'm an adult and suck my thumb a lot. I do it because it feels right, sort of like when you fold your legs over one another when sitting down; it's a posture of sorts. I do it when going to sleep, while sleeping, driving, watching tv, etc. My whole mouth is shaped to fit my thumb so I hardly ever have to really open my mouth much; that's one reason why it's VERY comfortable and feels good.

Never have and never will...unless the occasion calls for it.