2.
The leftover crumbs stuck in Guy Fieri's goatee.
5.
Old, dried-up skin from a Ped Egg.
6.
That bag of expired mystery cheese you randomly find in your roommate's fridge.
10.
A lurking fungus in the locker room.
12.
The inside lining of someone's running shoes.
14.
This lady's amazing fingernails.
15.
The entire trash compactor room from Star Wars.
16.
Krumm's hairy armpits.
17.
This cigarette, mixed with fresh vomit.