Professional Baseball Does Funny Things To One’s Head

Or, at least, it certainly did funny things to Mark Littell’s head (see: NuttyBuddy).
For reference’s sake:

Yes indeedy, ’cause taking a fastball to the groin is a sane, rational thing to do. The above-linked PopSci article claims the genius is even going to go so far as to fire a bullet into a NuttyBuddy while he’s wearing one. These are not the actions of a man in full possession of his senses.