A couple are seen having a carefree food and water fight in their home, followed by smashing some eggs and stuff on each other, then followed by a glimpse of them having sex in the mess.
That's French, not German, with incorrect subtitles... I never saw this movie, but love the actress. Her name is Charlotte Gainsbourg. The guy is Yvan Attal. They are married together in real life...
The movie is "Happily Ever After" (french: "Ils se marient et eurent beaucoup d'enfants") from 2004.
Look it up on imdb. There's a picture of the food fight.
Charloette is beautiful. This may be one of the best examples of 'spontaneous' carefree splashing IMHO, that I've seen videographed. Spontaneous wetlook and wam, with devil may care regard to clothing , etc..is the best..