Did he just say "Enter?" Seriously? Like some kind of supervillain? Oh ho.
Benjy scurried into the bathroom, closed the door and went for his toothbrush. "Hihihi." Like he didn't even notice Magnar was naked in the tub. Who cared? Benjy didn't care. He didn't even really notice. He was in his own little world, putting waaaay too much toothpaste onto his toothbrush and shoving into his mouth to brush his teeth. Because he needed to. Right at this moment. Most people weren't like that but Benjy was the kind of person who had very immediate needs that needed to be filled and a very short attention span.
Otherwise it would look like an attempt to catch Magnar in the bath. Uh, weird. Who wanted to see that?