It's kind of surprising that this hasn't happened until now.

Someone with a little extra time on their hands decided to mash-up Robin Thicke's song "Blurred Lines" with the theme song from "Growing Pains", which of course is his dad Alan Thicke's old sitcom.

In case you didn't know, Robin is Alan's son...and 'Blurred Lines' is the biggest hit in the country right now. It's also a TOTAL ripoff of Marvin Gaye's 'Got to Give it Up', but that's a story for another time.