As has already been said, for me it is mostly about audience and appropriateness.

DH and I can have our jokes. He will joke with his online boys about me "having his balls" if he does not get off soon, but in turn, I would not actually make that threat to him joking or not.

Funny, I am a bastard, but don't take offence to it, in fact it is a word I use a lot. I am a swearer though

I don't joke about animal cruelty. I love my animals and in saying that I am a meat eater who does "farm" animals for eating.

If anything though, I more upset about the setting of where something gets said, as opposed to what is said. How appropriate is it? Just because you think it and just because someone you know might find it funny, saying it in a Church, workplace, supermarket queue, on facebook, is sometimes just out of line.