There is a medical distinction between Guts and Balls. We've
heard colleagues referring to people with Guts, or with Balls.
Do they however, know the difference between them?
Here's the official distinction; straight from the British
Medical Journal: Volume 323; page 295.
GUTS - Is arriving home late, after a night out with the lads,
being met by your wife with a broom, and having the Guts to ask:
"Are you still cleaning, or are you flying somewhere? "
BALLS - Is coming home late after a night out with the lads,
smelling of perfume and beer, lipstick on your collar, slapping
your wife on the butt and having the Balls to say: "You're next, Chubby"
I trust this clears up any confusion.
Medically speaking, there is no difference in the outcome; both are fatal.