Is it normal to like making yourself sneeze?

I've done it since I was about six or something, and have it down to an art really. I can do it covertly in public, or so I do it 20 times in a row, etc. I like the endorphin rush from it, so it's kind of like an addiction, but not exactly. If it's unhealthy I rather not do it.

Also if it's unhealthy or could lead to health problems, I'd appreciate someone mentioning that.