Did you know that I like to play with my dandruff?
Really? Thats a really weird thing to do but tell me why you do it.
I feel like its something weird that makes me interesting.
Having something unusual about yourself that makes you feel special is great, but I think what you chose isn't what you want to be known for. Playing with your dandruff is kind of gross and no one's going to find that interesting, they'll just want to avoid you.
Well, I'll try and make it a good thing.
It's harmless in itself so I guess it's fine but people aren't going to accept that as something normal, so I suggest you try something else. There are plenty of other things out there that won't make people avoid you but are weird that you can try.