Checkers who referee the game play, check and cross check checkers that cross check. Once Cross checkers are checked and cross checked for cross checking, they check in to a box to be put in check. Wanna Bet? Check! Is that a fact jack? Better run that check and then Cross check that. Grocery checkers box items that box shaped people buy in the checkout line where all checkers stand on box shaped booths checking box shaped carts full of boxes at the check stand. Checking out other checkers to see if the lines moving faster. Boxes in box shaped carts that came from box cars that were placed in box trucks to be shipped to and checked at the store. Box shaped women standing on box tiled floors, talking to checkers, keeping their mates in check while checking their lists as the checker rings up what’s left of their check all the while, in checkout lines at a check stand. Checkers check checks that pay for that checked off list written down in check books. Check please! Check's in the mail, check mate.