How about the time he hurt his knee by claiming he tripped over his own feet? It is well-known in women's self-defense that to disable an attacker quickly, kick him on the knee, particularly if you have to fight on the ground.
My theory--and it is only a theory--is that he groped the wrong woman and she really let him have it. I'd have given him a black eye--just to see how he'd spin that one.
Didn't Hitlery do that one time? I remember seeing a pic of him with rather heavy makeup on his left(?) eye after one of their lovers spats.