I'm nuts, but I do give Mr. Jones and Snowy nippy. And Snowy's normal state is bounding off the walls.
I gave it to him even as a baby.

Last night, we got home real late (5am) and I broke out the nippy, feeling guilty. I put the lid down for Mr. Jones, and he starts licking it before I even put the catnip on it

Snowy gets his right out of the tub, sometimes he snorts while his whole face is in it, and he pushes with his face, real hard. He's knocked the whole tub out of my hands.