This is a wonderful movie... the plights of those 3 siblings are very believable, while at the same time being very funny - not "rolling on the floor" - funny... more "smiling all the way through the movie" kind of funny (although I nearly fell of my couch when Mike starts giving his retarded brother some practical instructions on how to get rid of sexual pressure). The story is about Mike, a young guy with girlfriend troubles, his mentally disabled brother Josch, who wants nothing else for his birthday than his first sexual encounter - with Mike's girlfriend! - and their sister Nic, who knows all about the genetical and biological background of reproduction and now wants to experience it first hand with the area's biggest bully. The three of them are quite close and try to help each other, but the results are of course hilarious. The ending is a bit daring... just as unconventional as the whole movie (which is a good thing in my books). If you get the chance to see this, by any means check it out!