The Man from the Diners' Club is a 1963 comedy film starring Danny Kaye and directed by Frank Tashlin.

Foots Pulardos is a mobster who intends to flee to Mexico with his moll Sugar Pye.

In the meantime, he applies for a Diners Club charge card that is mistakenly approved by a meek clerk named Ernie Klenk, who is told to retrieve it from Foots.

Foots finds out that they share a unique physical similarity, which gives him an idea: he will burn down the gym, with Ernie in it, and change identities to fool the law.

Complications ensue, and the more involved that Ernie gets with Sugar, the more jealous his girlfriend Lucy becomes.