Okay - finger popping. That explains why I didn't know that to which you were referring. (Talk about pedantic grammar!) I tend to hammer my fingers abruptly in and out of place, so thus, I guess, no comments from my instructor about crossing noises.
Comes from so much practice giving blessings and absolution, I would assume. 
Rev'd Father Bill White: Mostly retired Parish Priest & former Elementary Headmaster. Lover of God, dogs, most people, joy, tradition, humour & clarity. Legion Padre, theologian, teacher, philosopher, linguist, encourager of hearts & souls & a firm believer in dignity, decency, & duty. A proud Canadian Sinclair with solid Welsh and other heritage.
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