Men and women tend to make jokes about the other gender. Religious groups are apt to take each other on. People in bordering states tend to be on the wrong end of the joke. In North Carolina, it seems to be about farmers in West Virginia, but when I lived in Indiana, it was those farmers from Kentucky. And, of course, if you're from New York, everyone else in the world is a farmer.
Risque jokes can be risky.
They will get you in trouble if you say them to the wrong person. Know the limits of your audience. Turn questions into opportunities with humor. You give a 30-second phone pitch and ask for an appointment at the end. Don't dread cold calls, laugh them off.