It does look hilarious when they do that! Every so often, Fister races around - mostly in the evening, and if a door is ajar, he thinks he can race though it without hitting his head - BUT HE CAN'T! Also it's funny to watch when a cat has fallen down or banged into something, they look like "no big deal, I meant to do that" - nothing to laugh about! and they start washing themselves as if all is normal. LOL!