Do you like to tell jokes?
I do enjoy jokes. I especially enjoy jokes that tell a story, and then catch you off-guard with the punch line.
Thats great! I tend to make fun of myself sometimes to make people feel more comfortable.
Self-deprecation can be funny at times.  Do you ever engage in practical jokes?
I'm sure that I have a few times. As long as it doesn't hurt the other person in any way.
It doesn't necessarily cause any harm.  It's just a mischievous trick that causes embarrassment, confusion, or discomfort.