Hmm. How do we do anything when we can't decide?
We roll for it!
SpoilerOkay, Nat 1 is obviously bad. Nat 20 is it's just an incredibly over-glorified nosebleed. 5 or less is broken nose. 6 or higher is just bruises and ouchies, no lasting damage.
There you have it; he's just banged up from the fall.