A Cat-astrophic Tail

(Forgive my horrible title pun but I could not think of anything else)

So this is inspired by a few things.

The first thing is that video Misha posted of him and Jensen acting like the cats they watched in some other video.

The second thing is a Tumblr post that said something like 'what if there was an episode like Dog Dean Afternoon only instead of turning into a dog, he turns into a cat and Sam has way too much fun messing with him'

And the third was RynAutumn (who is an awesome writer by the way and you should check her out) and I talking about drawing a little comic where this happened and Cat!Dean doesn't realize that he's totally into Cas. But Sam does and he thinks it's hilarious and is all smug about everything and Dean is completely clueless like he always is.