Whoa, I'm surprised no one has commented on this ep yet. Huh, well there isn't a ton to say it is pretty straightforward.
My cats do this too, but especially my youngest one, when I'm petting him or scratching his chin and he really likes it, you can tell by his eyes and pupils, but as soon as he's had enough or not really enjoying it anymore they change quite noticeably. It's extra fun if you know where the best spots are because you can watch his eyes change back and forth sometimes. XD

In fairness, human eyes do something similar, but not to near the extent that a cat eye does.

The same with my cat as well, and when I pick up cause she wants attention she turns a 180 on me and just nips at me.

They think it's a fun game treating your hand as prey. >D

I hear that, thankfully I have successfully coommunicated to my youngest (and largest) on that if he bites, I go away and I take the treatos with me. His reactions the first few times I did that were hilarious. XDXDXD

lmao when my cats play like they're hunting or readying to pounce their pupils dilate soo much it's the cutest thing~

XD I hear ya! Mine does that too! Also, when I'm petting him or scritching his chin and then stop and walk away suddenly, his pupils get huge and he gets this look on his face like I just said goodbye forever! It's both adorable and hilarious at the same time.

lmaoo so cute!!

I mean, it's been said, all pet owners think their pets are cute....and I'm no different, he really is! He's freakin adorable, a clumsy goofball in a furry tuxedo and two little white boots on two feet and little black boots on the other two feet. XD

And they were not able to save her hand.

she became a zombie

The cat sleeping with his eyes open...just in case. Lol!

OMG, I saw that coming when the cat suddenly became possessed!

Öh nö not the bitinggg :<

New cat game: are you just by the light or are you gonna gnaw my hand off?

I have a ginger chunky fat cat and he is dumb as a rock but never attacks me,

Nice episode.

cats don't understand that humans move slow. sloooooooooooowww. humans don't notice all signs immediatelly and/or will act accordiatenly.

"I really want you to catch me, but if you do, I'll bite you."

Accurate.