"Makin' Whoopee!" is a jazz/blues song, first popularized by Eddie Cantor in the 1928 musical Whoopee!. Walter Donaldson wrote the music and Gus Kahn the lyrics for the song (and indeed for the entire musical).

The title is a slang expression for sexual intimacy, and the song itself is a "dire warning", largely to men, about the "trap" of marriage. A review of a James Naughton cabaret performance. "Mr. Naughton pounces on the dire warning to men lurking beneath the song's playful surface: that once the honeymoon is over, marriage can become a trap from which there is no escape." "Makin' Whoopee" begins with the celebration of a wedding, honeymoon, and the early years of marital bliss: : Another sunny honeymoon : For makin' whoopee

but moves on to babies and responsibilities: : Down where the roses cling : Think what a year can bring : He's so ambitious, he even sews : For makin' whoopee

and ultimately on to affairs and possible divorce, ending with a judge's advice: : I think it's cheaper