Green’s Dictionary of Slang

(bingo) the number 22; thus all the threes, 33; all the fours, 44; etc., up to all the nines, 99.

1943		M. Harrison Reported Safe Arrival 85: Double numbers, such as fifty-five, are called thus: ‘all the fives’.
1984		Partridge DSUE (8th edn).
2002		www.ildado.com 🌐 Bingo Nicknames [...] 22. Two little ducks (suggesting the necks of two swans), Ducks on a pond, Dinky doo, All the twos [...] 33. Dirty knees, All the feathers, All the threes, Gertie Lee, Two little fleas.