Most of my jokes don't register with the majority of the crowd. There is usually at least one though that gets it and knows that they are on the inside and love it. I just smile at them and go about my business.
I think there's a difference between humor around people we're totally comfortable with and our humor around other people. In the former case, most people haven't ever witnessed it and it's actually funny sometimes. I know I normally make people work for it, though...it may require some thought to get the joke, or it's just ridiculously debaucherous. In the latter case, though, I think we just use sarcasm/dry humor/whatever because it's the safest form of humor.
"You will always be fond of me. I represent to you all the sins you never had the courage to commit."
Reason is, and ought only to be the slave of the passions, and can never pretend to any other office
than to serve and obey them. - David Hume