Is it normal i fantasize about being cut?

In the past few months (since arriving as a freshman in college), I have started to have elaborate fantasies about both cutting and damaging my body, and allowing others to do so.

An example of this is a frequent daydream in which I hand someone a knife and tell them that they have an opportunity to cut someone open and that they'll probably never get this chance again. There's usually an element of tempting the person to cut me, or testing them, seeing if they'll do it. I've only actually done it once, in the context of a hook-up, and the girl in question seemed pretty intensely disturbed by being handed a knife and asked if she wanted to cut open my arm.

Alternatively, often I'll be walking around, and keep asking the universe for something to happen, like a tree falling on me, or getting run over by a car.

I don't feel depressed: I love my school and have made some great new friends, I've just also developed this new fascination. I dwell a lot on the feeling of splitting skin or flesh: wondering what that actually feels like, because pain usually blots out the actual sensation of the flesh pulling apart.

Only a few of my friends know about this new development (there has never been anything like this behavior at all in my past, I was never suicidal or interested in self-harm) and most of them seem a little disturbed by it.

NOTE: I never have fantasies about other people getting hurt in this way. I'm not a sadistic personality type, normally I'm quite a dominant, type-A personality. I'm honestly kind of a control freak.