greasy hair, frizzzzzzyyy hair, bleech blonde hair and those damn jerry curls! I dunno how anyones hair can naturally look that curly.And my all time BIGGEST PET PEEVE, WHEN EXTENSIONS SHOW CUZ UR EXTENSIONS ARE STRAIGHT AT THE BOTTOM AND YOUR REAL HAIR CURVES AT THE BOTTOM!! Thats happened to me and i want to kill myself, u can tell that im wearing extensions when that happens, but u can only tell if u have extensions yourself or know some1 who wears em. But I only wear mine on special occasions or if im having a bad hair day in general.