Having had cats all my life, I am pretty sure the cat is getting the beer for himself.
No doubt about that, and half way through it, when you find the cat drinking it and say "What the hell, Patches?", the cat will just stare at you a moment then go "Oh, you wanted one? When you said 'kitty, go get a beer', I thought you meant for me to get one for myself."
I'm just glad my cats can't open the fridge.