I don't see the point in keeping something you like a secret. If people are going to rip you for liking something, then they're not friends of yours, so just ignore 'em. Everyone I know knows I play Pokémon etc, it's just part of who I am. I don't go around professing "I play Pokémon and idgaf what you think!!" everywhere, but y'know. If someone asks or it comes up in conversation, I'm not going to ignore it.
I wasted so much of my time and energy in secondary school caring what others thought of me, and that was really stupid of me. People who constantly judge others like that, and rip on people for the "fun" of it really aren't worth any kind of your time and/or energy.