I know its a silly question, but I've forgotten how to do it since its been a while since I've interacted with humans besides my mom. I used to say hi, but I think males arent suppose to say hi. If I'm at the store and going to pay for my stuff do I say hello? If I get a job and there are some young people, do I say whats up or hey? I was thinking to people you dont know you say hi and to people who you do know you say hey or whatsup or heywhatsup?