My cat would sometimes hang out in the bathroom in the winter when I would take a shower cuz it would get really warm and steamy in there. One time I got out of the shower and I was drying my head off and I look down and he was watching my swinging dong like it was a mouse and he was all crouched ready to attack. I stomped my foot and it scared the shit out of him and he ran away. Needless to say, I never let him in the bathroom again while I was taking a shower.