I got 3, actually, one for my killer ending move; so at a gig, or a crash, I do this every 5-10 minutes or so, depends on how many performers there are, and what type of place/specs I'm performing to.
And one if they ask for another finale...
and the 3rd, if I mess up, lol, so I can cover up for my mistakes.
Or, I use 'em if there's a heckler.