You can make jokes about other people and they love it! Also they make jokes about themselves and you! In Mexico people have a good sense of humor. Not at all sensitve! So, if you visit Mexico - don't be offended if people make jokes on your account. They don't have bad intentions. That's just the culture!
With Raul (the security guard) you can make all kinds of jokes!
Me: Look, you have a twin! Raul: Oh, I never saw him. Me: More security! They should pay you double! Raul: Yes! Double food & double vacation! David: He is more black than you! Raul: Yes, they let my brother longer in the sun!