I felt uncomfortable with those kids loitering around in the train.

Why are you wandering around your house?

Tom is always scurrying around the classroom during class.

"Grandpa, where are you going with just your underwear on?" "Just to the vending machine over there." "Grandpa, this isn't our house you know. People will get angry if you're wandering around in just your underwear, so put some clothes on, ok?"

Hey, Cleo. Don't wander around too much, OK? We've only just entered the park.