J: It's U!
N: Yes U! Words that start with U-oooo,oooo
J: Under and untrue- oooo, ooooo
J & N: There is ukulele
J: And there's until
N: Upright, unpopular
J: And uphill
J & N: Have u and always will
J: Words that start with with u- ooo, oooo Uncle and unglue- ooo, ooo [ From: http://www.metrolyrics.com/when-im-calling-u-lyrics-sesame-street.html ]
N: Union, uptown, undress and upside-down
J & N: I'm in love with u- ooo, oooo
J: Ugly starts with u- oooo, ooooo Uniforms do too- ooo, ooo
N: Some will have the u sound as in unite. Some have the uh sound as in uptight.
J & N: Don't worry, it's alright.
J: Useful starts with u- ooo, ooo
N: Underwater too, ooooo
J & N: Up, underwear, umbrella, unfair I'm in love with u, ooooooo, ooooo ( high pitched)
The letter U standing on hillside turns around and says: Unbelievable!