#ASL in the "for what it is worth" department if you say hello to someone and they don't respond, don't assume they're rude or standoffish.

Many of my neighbors bitch about me not answering them when I don't know they're talking to me. I hear about it later.

Sometimes I wear a shirt that has a deaf symbol on the front (ear with a bar through it) that says "pass with caution, wearer is deaf."

People apparently can't read, either.