She takes him up to a hotel room. She produces rope or sometimes handcuffs and suggests he be chained to the bed and kinkiness will ensue. The guy always enthusiastically agrees. At which point she cheerfully robs him blind and leaves, leaving the robbed and naked guy stuck until someone finds him. A prime example of Comedic Sociopathy in that the victim is not only robbed as in a mugging , but deeply humiliated in a public way while the trope is almost always played entirely for laughs at his expense.