my brothers are identical twins but they don't look very similar because of how they have their hair and facial hair and their clothes style, but when they were younger, bro1 always had his hair cut really short, probably number 3, my dad used to take us to our grandmas and shed do it for him, one time, bro2 decided he was going to have his done the same, when we got back home my mum called bro2 by bro1's name when she first saw him.
another freakyish story is that when they were 2 they were messing about and bro1 cracked his head open on the door frame and had to have stitches just above his right eyebrow, two days later bro2 hit his head on the fridge and had to have butterfly stitches in exactly the same place as bro 1 had.