Whenever I want my cats out, they want in. When I want them in, they want out. I think the rule for cats is that whatever side of the door they're on when it opens, they have to go to the other side.
Oh, and Hair, my cat has figured out that if he's inside and I'm outside and he climbs the mini-blinds like a ladder that I'll let him out. Smart little critters they are!
These animals have us trained alright... Our kitty just walks over to the door and starts clawing the carpet. Asking nicely gets him nowhere, I guess, if he ever did try, so he decided "If I go over here and be bad, she'll get up!"