Think about this when you go swimming next time

Why are there three hands instead of two?

Why you do this

I can be a mermaid!!

Good thing I can't swim and will never have to face such a nightmare

I'm going today ;-;

thanks I'm flying to a beach tomorrow! :')

Damn it...guess I'm not going swimming.

Thanks, Satan

Y u do dis

The question is whether this happens at the beginning of the episode or if it happens toward the end and I'm saved by a Winchester.