1) they're all rabid dogs, and they're hallucinating about what it would be like to be humans.
2) they're in an alternate universe, and ali's actually alive while everyone else is dead.
3) they're all on the A team, but its split into two sub A teams now because the ones who were there from the start hate the new comers who act like they're so dedicated. We all know from being in fandoms the oldies always end up hating the newcomers because theyre more annoying than stepping on a lego.
4) the writers are going to start stalking fans on twitter, facebook, instagram, ect. Just to make us see that stalking is not entertaining and teach us all a lesson in finding murder, blackmail, obsessiveness, and stalking amusing.
5) alison will wake up in the barn and realize it was all just a dream
6) they will reach the next season finale, and we'll think one of the characters is A and they're about to murder someone, but then they'll raise a gun to the camera, shoot the screen, and we'll realize:
WE ARE THE A TEAM.
We've obsessed over everything that anyone in rosewood has done, followed the girls' every move, and watched them the whole time.
BAM. mindblown, aren't you?