So. Tired...
Ah! Things! Okay. Words. Got 'em.
When talking to people (especially teachers), I have sort of a mental checklist I'm constantly running through.
"Walk up to the teacher. Oh, no, he's talking to them... should I go join in the conversation and then bring it up? I'll just wait until he's finished talking... Okay, he's done. Walk up to the teacher. He's not going to kill you. Speak. Say something. No, you're mumbling. He's talking to someone else and still doesn't know you're there. Say it. Say it! Okay. Words have been spoken. He's talking. Nod at what he's saying. Am I supposed to smile? I don't know. Neutral expression. That works. Say something that means you agree. He's done- wait, am I supposed to?- just say something affirmative. Okay, seems he's wrapped that up. Say thank you. Smile. Walk away as non-awkwardly as possible. How slow am I supposed to drop the smile? If I do it right away does that mean I'm a grouch? If I keep it on too long am I too happy-looking? Okay, hide in that closet! No, not supposed to do that. Get away from the people! Okay, you're alone now. You can breathe again."
My people skills are sooooo on point.