What totally normal thing just grosses you out?
Gum - its disgusting bacteria ridden spit covered hunk of nasty... PUKE
Styrofoam - its not so much the stuff itself and more the sound it makes. Like this small coolers made of it? yah .. *shudder*
When people pick dog poo up with a bag on their hand. YACK!! ... I do it because I am not a total asshole but I will gag and almost vomit the whole time. lol