- Makin' Whoopee is a 1928 pop standard written by Walter Donaldson (music) and Gus Kahn (lyrics) for the Broadway musical Whoopee!, where it was introduced by Eddie Cantor. 
- It was first performed on December 4, 1928 and first recorded on December 18, 1928, with the song published and released in 1928–29. 
- The lyrics tell a story that starts with wedding bells and honeymoon bliss, then moves through babies and responsibilities, and ends with possible infidelity and a judge’s advice — a tongue‑in‑cheek warning about the traps of marriage. The title and phrase making whoopee have become a lighthearted euphemism for intimate relations. 
- It is regarded as a jazz and pop standard, and has been covered by many artists including Bing Crosby with the Paul Whiteman Orchestra (1929, reaching #8 on the charts), Frank Sinatra, Ella Fitzgerald, Doris Day, Branford Marsalis, and Dr. John, among others. 
- The tune has appeared in films and advertising (notably Pepsi’s 1961 Now It’s Pepsi campaign and a 1993 Heinz commercial), and the original composition entered the US public domain in 2024.