The sterner sex have a form of rhamanta in which the knife plays a part. This is to enter the churchyard at midnight, carrying a twca, which is a sort of knife made out of an old razor, with a handle of sheep or goat-horn, and encircle the church edifice seven times, holding the twca at arm's length, and saying, 'Dyma'r twca, p'le mae'r wain?' (Here's the twca--where's the sheath?)