No one can ever say Vince Vaughn is all thumbs -- he's missing half of one thanks to a car accident in his teens.

Vaughn lost the tip of his right thumb at the age of 17, and now refers to it as a "penis with a fingernail."

We might not be able to eat for a week after reading that.

Explained Vaughn of the incident, "I had the skin ripped off the back part of my thumb. The length of my thumb is the same but the back pad got ripped off."