two reeds in an oboe?
Two 'O's in Google and Yahoo!
Two for the price of one
2=O in G and Y(Two O's in Google and Yahoo)
2 hearts in Dr Who
2 covers on a book
2 sides to a argument
2 Wrongs Don't Make A Right
2 peas in a pod
2 Can Be As Bad As 1
In bingo, 22 is referred to as "Two Little Ducks"22 Equals 2 Little Ducks
2 Number it Takes to Tango