Oddly enough, being thrown of the shoulder of a Winchester or just picked up and carried around by one was really not all that surprising. It wasn't even usually a cause for actual struggle, when it was done in play, and the last very memorable time she'd been picked up like this while in a less-than-great mood, Dean Winchester been given two kicks to the groin for his troubles.
Twisting as hard as she could, she was only able to verify that this wasn't going to be a repeat of Closet Kidnapping before the bathroom floor became visible. At that point, she started to fight him, unable to kick much with her legs held, but doing her damnedest to hit his back and ass to get him to let her go.,
She hadn't really been aiming for ice-cold water as the point of escape. The shock of it to her magic-dulled senses was on part with the utter shock that Dean had done this to her.
"WHAT IS- HOW- ARE YOU INSANE?!" she shrieked, slipping on the quickly-dampening bottom of her pyjama pants as she lunged in the general direction of 'beyond Dean' to escape the water.