Bingo Pong

Ted and Jerry the orderlies play a lot of Ping Pong.
When the rec room ran out of Ping Pong balls, they took one out of the Bingo drum without telling anyone.
Folks didn’t notice that B-7 was missing until Old Lucky Gertie lost seven rounds in a row and demanded a count.
Pastor Fred dumped out the balls and checked, and sure enough, B-7 was missing.
Pastor Fred had a riot on his hands, with geezers throwing cards and markers everywhere.
Ted and Jerry saw the ruckus, broke up the fights, and quietly slipped B-7 back into the drum.