Risky business! Johnny Ruffo strips to undies for Tom Cruise impression

Australia's own Johnny Ruffo made many a teen fan-girl's dreams come true by stripping to a pair of tightie-whities to impersonate Tom Cruise in his famous dance scene from the 1983 comedy Risky Business.

The cheeky Home and Away star posted the Instagram video of himself on Saturday with the caption: "#riskybusiness #tomcruise what I do in my spare time." Watch his impression above!

The 25-year-old scored nearly 6000 likes on Instagram for his efforts. Johnny, if you're reading this, we'd love you to do Tom's famous couch-jumping Oprah moment next!

So how does Johnny's impression compare to the original? It's actually pretty spot-on — view the original below:

View slideshow: Celebs impersonating other celebs!