ha, my pickiness was related to meat. I've always had issues with meat, like fat or gristle, or anything that you bite in to and feel gross. I'd cut off all the fat, which my mother complained was half the meat, but it always grossed me out, and still does.
Me too! All my life. My DH loves steaks - we have steaks, and I have half a plate of fat and junk left, and his is practically clean (shudder shudder) I'm the one that gets a mouthful of gristle, or a fragment of bone, or hidden vein of fat, or some other horrible thing in every hamburger, pasty or piece of sausage (sausage - yuck - I don't eat much of that.).

There are stories about my great-grandmother hovering around during dinner, and then picking the fat scraps off people's plates and eating them - "Can't let that go to waste!". Eew.