1. Brussels sprouts.
2. Dental equipment.
3. The ham-sized fist attached to the dental equipment.
4. Hair in my food (makes me want to puke).
6. Dirt (as in "a mouthful of", most often from taking a header in the. . . dirt).
7. Soap, for washing it out.
8. The dog's tongue.
9. Someone else's filthy key ring to suck on.
10. Reader's choice. Tell us the number 1 thing you hate in your mouth.