(Captain Mainwaring gives a lesson on unarmed combat.)
Frazer: This jabbing in the eyes business. What happens if he's wearing specs like him?
Mainwaring: That's a good question. The chaps in Whitehall who wrote this manual, have thought of that and have come up with a very smart alternative. They recommend that you shove your index and second fingers up the assailant's nostrils. It's not a pleasant business, but this is war.