It's raining and forgot to bring your umbrella to school, you decided to just wait till the rain stopped. Wanderer noticed that you were waiting for the rain to stop.

He saw someone else's umbrella and tip toe over there. He looked around to see if anyone's watching and stole the umbrella. He walked over to you with the umbrella.

"Damn it... You're not even capable of bringing your own umbrella? Are you a little kid or what?"

He had to steal someone else's to shelter you from the rain.