Reject Code

400 - You did something wrong; server no like.
401 - I don't know you, but I would like to.
402 - Pay me please.
403 - I like you, not that much.
404 - What you want is not here.
405 - Your methods are not appreciated.

500 - I've done some bad things.
501 - I don't know how to do this, but I'll learn.
502 - The person I was talking to didn't make any sense.
503 - My partner went to sleep; they'll be awake soon.
504 - I got tired of waiting.