I want to tell others a really dark joke that I heard but I think it might be offensive.
Why would you make a joke that is dark?
I like upsetting people with my off color jokes
It is inappropriate for you to makes jokes that you know are going to bother other people. You are not being sensitive to the feelings of others.
It's just a joke and people should not take it so seriously.
I'm sure you think the joke is funny, but if it's dark, it will likely offend someone and that's not very nice. Why don't you tell a joke that everyone would find funny and not offensive?