There are few things worse than getting hit with a ball in the face (except your nuts, obviously) because it’s a classic case of insult to injury. Not only is your face a sensitive place, the people around you are legally obligated to laugh at your embarrassment.
And if you’re wearing glasses, forget about it. Game over.
The good news about all this pain/misery is that everyone experiences it at some point in their life (unathletic people more than others), so there’s plenty of opportunity to laugh at them when it happens–just like they did with you.