Once while playing the 5c slots with coins instead of paper money,
besides noticing my fingers were getting pretty black,I also was aware
of how annoying my play was to the guy next to me.
So I decided to examine each nickle that just fell through into the tray
and then toss the failing ones into the trash bucket next to me.
That about drove him crazy after about a half dozen tossed out nickles
and he got up with a "humpf" and left.
I win / I grin