West Germany
Two bickering neighboring families, the Hirsekorns and the Buntje's take separate holidays to the Italian coast but still end up in the same hotel. The two men, Willi and Heino decide to bury the hatched when they spot a beautiful blond in a tight fitting bikini. - IMDb
| Das Kann doch unsren Willi nicht erschüttern - Die lustigen Abenteuer der Familie Hirsekorn (complete title) | West Germany |
| Das Kann doch unsren Willi nicht erschüttern |  Austria |
| Das Kann doch unsren Willi nicht erschüttern |  Ecuador |
| Das Kann doch unsren Willi nicht erschüttern | West Germany |
| That Can't Shake Our Willi! |  United Kingdom |
| That Can't Shake Our Willi! |  USA |
| That Can't Shake Our Willi! |
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Irina von Bentheim [8] | Lotti Hirsekorn |
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Nicolai von Bentheim [10] | Kuno Hirsekorn |
