In Germany, what phrase is used to reveal an April Fools' prank?

In Germany, “April, April!” is the phrase used to reveal an April Fools’ prank.

The expression is the German equivalent of telling someone “April Fool!” after they have believed a hoax or trick. It identifies the listener as the target of the joke, rather than describing the prank itself. German also uses “Aprilscherz” for an April Fools’ joke.

The wording became familiar to English-speaking audiences through the 1935 German comedy film April, April!, whose title uses the same expression. The film was directed by Detlef Sierck, later known in Hollywood as Douglas Sirk.

A common mix-up is to translate the phrase as “April Fool,” although its literal wording is simply “April, April!” The repeated month name functions idiomatically as the reveal that the supposed story was a prank.