What sends shivers down your spine like the good ole "nails on a chaulkboard"? Things people do, say or don't do or say. Basically what really pisses you off.
I will start I guess.
"Grammer correcting" I hate it when someone corrects my grammer. Unless I am asking you to proofread something for me or am looking for a good way to put something..shut up if i screw it up or say "me and my brother" instead of "whoever and I" I hate it and want to pop their heads off like a dandelion.
also slow drivers, "the woe is me attitude", teletubbies