Option 1: The "Mistaken Identity" Blood Type
* Early Scene: Daphne (Marilyn Monroe) is in the hospital, and the doctor (played by a comedic actor like Milton Berle or Jack Lemmon) is trying to determine her blood type.
* Gag: The doctor repeatedly misreads the results, saying things like, "Hmm, interesting... looks like type O negative... wait, no... type AB positive... Hmmm... maybe she's a rare blood type: "Type Hot Blonde"?"
* Later Scene: During a frantic moment, Daphne needs a blood transfusion, and the doctor rushes to find a match. He finds a man (perhaps a gangster or a rival musician) who claims to have the same blood type. The scene ends with a comical reveal that the man is actually a type O negative, the wrong type, creating a hilarious mix-up.
Option 2: The "Blood Type" Dating Dilemma
* Gag: Joe (Tony Curtis) and Jerry (Jack Lemmon) are disguised as women, trying to date. They discover that women in the 1950s were obsessed with blood types, believing they were related to personality.
* Scene: They're having a double date with two women who are deeply concerned about blood type compatibility. Joe and Jerry (in their female personas) have to frantically invent fictional blood types, leading to hilarious misunderstandings and comical lies.
* Later Scene: The two women are reading a magazine about blood type and personality, and they are horrified to learn that Jerry's "blood type" (which he lied about) is known for being "flighty and untrustworthy."
Option 3: The "Blood Type" Musical Number
* Scene: Daphne is being interviewed by a reporter, and she sings a song about her "unique" blood type, making it a whimsical, almost operatic moment.
* Gag: The song would be absurdly exaggerated, full of dramatic flourishes and nonsense lyrics like, "My blood type? Oh, it's a mystery... it flows with the rhythm, and it's full of ecstasy!"
* Later Scene: Joe and Jerry are listening to the song on the radio, and they're baffled by the whole concept of blood type being important. The scene ends with them looking at each other, knowing they're in way over their heads.
Adding Humor:
* Include visual gags like a giant chart of blood types that Joe and Jerry are trying to decipher.
* Have a scene where the characters are "blood typed" on stage, using a prop test tube and a humorous device to get a result.
* Let the characters use blood type as a way to describe each other's personalities, leading to funny contradictions and misunderstandings.
Remember, the key is to keep the jokes in line with the movie's fast-paced, slapstick comedy style. These running gags would add another layer of humor to the already hilarious film.