I'm trying to locate an animated short that I saw once online within the last 5-10 years. IIRC it was very high quality CGI animation and was European in original, maybe French. The story was very risqué although no actual nudity or anything was shown on the screen.
The lead character was a boy (with blond hair?). On his birthday (might have been Christmas but I think it was his birthday), he receives a beautiful doll. He is very disappointed - I think he wanted a train or maybe a truck, something like that. That night the boy goes to bed and, much to his surprise, the doll comes to life and grows into a beautiful adult woman. The doll-woman smiles sweetly at the boy, gets into bed with him … and the scene fades to black. The obvious implication is that the boy and the doll-woman had sex.
The next day the doll-woman is a doll once more and the boy has a newfound appreciation for his gift. The boy goes to school and when he comes home ready to play with his toy again, the doll is gone. His family, seeing his initial disappointment with his gift, had replaced the doll with the present he had wanted.
Additional info: I don't remember the site where I saw the short. It was maybe 10-15 minutes long tops. The doll may have not been replaced by the family the very next day. The boy may have enjoyed the doll-woman's company for a few days before she was gone. Despite the naughty nature of the scenario the vibe of the short was rather sweet. I don't remember there being dialogue. If there was it was not in English.