This is my last Matt-bat... EVER!
Don't get your knickers in a twist, some of you probably know a bit about me now and that is I like to 'ave a laugh :).
It's actually my last Matt-bat before we have a little intermission where I have to conjure up some more :). So you might see these bad boys every one or two weeks :).
Anyway, this clue is - A prank used time and time again.