I love it how his hair is changing color. It shows that Dipper is slowly becoming Bipper. The fridge says," No heads in here, Dip!" ^^I'm not sure, but I think this is Human Cipher, not Bipper. And I don't see his hair changing color either XD
GIF Triangle shaped stick man one eye with hat flying in sky, Gravity Falls Bill Cypher that evil isosceles “ELOO LV ZDWFKLQJ ” translated into "Bill Is Watching." No joke I did by myself, I have memorized the Ceasar Cipher for this kind of stuff.