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Reminds me of the Scandinavian (?) TV commercial for English lessons: a family (parents, kids) gets into the car and all start cheerfully bopping when a pop song comes on the radio. The words to the song are "I want to fuck you in the ass" repeated over and over. The ad fades out, with a message about where to get English lessons.
It's a double, but I can't find the post (Google doesn't seem to be checking up on us anymore). This video seems to be about 15% more explicit than I remembered.