Sometimes, if I say "kiss, kiss" my cat will lick my hand. If we say "You want some foo foo?" he knows we're asking if he's hungry. Also, my dad's taught him "look at the birdie" and "look at the kitty" whenever he says it, Gin looks out the window all over to find what we see. He also knows what "outside" means. I guess he's pretty smart heheheh.

And I have seen a cat walk on a leash, very surprising...my cat HATES leashes and collars.