SQ, Kai,
i also have a story about birth-mark-patch and it happened to my cousin. my mum told me one. she said, last time, when my cousin was born, she has a patch on her forehead.. cos apparently, my uncle/aunt, they painted something in the shape of the patch (i think they were mending a cupboard or wall or whatever).. so they say that's why got a patch and the patch is in the shape of the paint! So after deliver, they saw, they went to ask-god, the god say, go and paint over the patch AGAIN.. so they did, and the patch on my cousin forehead disappeared!
dunno true or not hor. so scary.