10. Cookie crumbs
It happens to everybody -- but especially to grown men who love cookies.
9. The 1974 Denver Broncos
Except for head coach, John Ralston, because he's too old to spend an extended period of time in another man's beard.
Well, not poop poop, but definitely the same bacteria that could be found in fecal matter. Actually, there very well could be an actual chunk of shit in there, too.
7. Little toys
Aww, toys for all the children of the world!!
6. A discarded joke about Jay Leno
It's not out of the realm of possibility. Letterman and Leno aren't rivals anymore, so Letterman would have hell to pay if anyone found a crumpled-up joke in his trashcan. Thus, why not hide it in a place the public would least suspect: his beard.
5. A sugar glider
Man, those little guys sure love hiding!
4. A cyanide capsule
Hey, that's not funny.