Yes Sir, That's My Baby
The music was written by Walter Donaldson and the lyrics by Gus Kahn. It was introduced by Margaret Young and was a hit for Ace Brigode in 1925 and for Eddie Cantor in 1930. It was later a hit for Ricky Nelson in 1960 and Frank Sinatra in the 1960s. The song has become a standard that has been recorded by over 100 artists in genres from jazz to rock, marimba and country.
Opening line: "Yes sir, that's my ba - by, no sir, don't mean may - be, Yes sir, that's my ba - by now...."
According to one source, the song was written when Donaldson & Kahn were visiting Eddie Cantor. Cantor's daughter Marjorie brought out one of her favorite toys, a walking mechanical pig. She wound it up and it started walking in rhythm while two notes kept coming from the little creature. Kahn was inspired and started working lyrics to these notes in rhythm with the pig, coming up with the title and opening line of the chorus in short order.
A Yiddish version entitled "Yes Sir, Iz May Kalleh" (Yes Sir, That's My Bride) was recorded by Peisachke Burstein. In German the song was titled "Küss' mich, Schnucki-Putzi."
The song was sung in Italian by "Duo Fasano" (Fasano sisters duo)  and the famous Italian singer Raffaella Carrà in 1973. The song was titled "Lola" and talks about a girl (Lola) that the singer is convincing to dance the Charleston, a <<fox-trot rivoluzion>>. 
It was also remade by Czech singer Verona in the 2011 with completely new lyrics and name "Hey Boy" and became an instant holidays hit in local radios.
The Swedish band Onkel Kånkel recorded a version of the song called Spetälske Leffe (Leprous Leffe) for their 1990 album Kalle Anka Suger Pung.