Passive Agressive?

Well I am really not sure if you can label a human trait onto an animal.. but I am convinced that Smoke, the laid-back, gentle, purr-fect one of my 2 norwegian forest cats, is actually quite passive aggressive. I've suspected this an a few occasions in the past, but this morning I am convinced. This is an adorable 12 pound bundle of hair with a wonder purr you can hear a room away. So laid back you can do anything with him - he is just a gentle lug of a 3 year old male cat. Ha!!! as long as you are constantly in tune with what he wants - like open the door!. Gypsy on the other hand, is a bit of a feline bitch with an attitude, but has never pulled the stunts that Smoke does. Now don't get me wrong, his passive aggression is never directed towards me.. oh never,.... it is always directed at Gypsy. Here is an example... if I need to keep the cats in for some reason, like a vet appointment, and Smoke decides he wants to go outside... well.. first there are a few meows.. if after 10 minutes I don't let him out.. he attacks Gypsy. He'll smack her, he'll bite her, he'll pin her to the ground. I break it up.. he turns sweet again and asks to go out.. I say no,,, and whammo - he is back smacking Gyps and pinning her to the ground. Then comes the time out in a separate room, all purrs.. then... meow can I go out now? No. Bang - Gypsy gets the attack again. It's passive aggressive behaviour for sure. I know some of you who know Smoke will find this behaviour hard to believe because he is always so wonderful.... but he really isn't. Trust me. He needs therapy!