D.W. being a troll at Simon Say

Arthur S02 E20b Sue Ellen's Little Sister

Sue Ellen: Hey D.W.! I've got an idea! Let's play Simon Says! I'll be Simon. Simon say put your hands on your hips.
D.W.: You said your name was Sue Ellen
Sue Ellen: Yes, but now I'm Simon. Now put your hand at your sides. Nope! You loose, because Simon didn't say so.
D.W.: Sure you did, Simon!
Sue Ellen: I'm not Simon now.
D.W.: Well then, who are you? DADDY! THERE'S A STRANGER IN THE HOUSE!!!
Sue Ellen: Forget it! Forget it! We'll play something else.
D.W.: Muh heh heh heh!