A Real Human Being

I've been writing a few Avengers drabbles, which I'll post later, and I just ordered some make up off Amazon, so I'm in a pretty good mood! The make up is basically one green lipstick and some green and purple eyeshadows. Are you sensing a theme here? You should be. It got me thinking, because this is obviously a thinly-veiled, "HEY GUYS DO YOU KNOW HOW INTO THE HULK I AM, DO YOU?" I'm really into The Hulk. Anyway, I was thinking:

How do you guys say you are into things that your RL friends don't necessarily know you're into, without actually saying it?

This could be fandom stuff, or anything really, I suppose! I'm really curious! For me it's definitely clothes and make up. 

This is the make up, in case anyone wanted to see!

( Here, pictures! )