I find that slightly odd. I have lost my ticket on 1 occasion. Still no idea how I did it (unless I missed my pocket putting it in). When the guard came round I immediately checked my pockets as I was sure it must be in one of them. Isn't this what anyone would do who really thought they had a ticket they couldn't find?
Yes it is but most have their ticket or know which pocket it is in.. The pocket dance is normally a ploy by those who dont have a ticket to delay time until the next station where they can get off the train knowing the guard wont follow them