Joke Collection Website - Talk about mood - How do you say "sneaking around" in English?

How do you say "sneaking around" in English?

I'm just a Weiduo. I'm just a freak. The above refers to people who are unconventional in their thoughts, behaviors, clothes and looks. Creep means disgusting people, and creepy's sneaking around is creepy. You can be a freak, or a freak, but you don't want to sleep.