Any situation which is made, sometimes for comic effect, to look like another situation -- not in the sense that it is mistaken for that other situation by any of the characters, just in the sense that we the audience see the resemblance. The characters do not. This sort of situation can lead to a Three Is Company plot if some other character hears it out of context. If unintentionally done: Looks Like She Is Enjoying It. If you see "it" everywhere: Freud Was Right