Question for Quiet Reflection

This is a variation on a theme.

Question: How many Catholic nuns could you fight off before being knocked out?

Please, consider.

Rules:

1. You have received some training in the martial arts.
2. You are in an enclosed space the size of a small church hall.
3. No holds barred. Anything goes. Eye jabs, Vulcan Grips, anything. But no weapons (except use of the odd hymn book that may be lying around).
4. All the nuns are over 60 and so don't have real teeth with which to bite back. But their power is in their numbers. There are swarms of them, and they are angry. (And no, they don't have guns)

As I'm not too fit, I personally don't expect to mash my way through too many. But I’m a heavy man, so a simple belly flop ought to finish off a few, so I say 15, tops.