Mum pranks child with toy that isn't as innocent as it seems

A mum's prank on her child has gone viral with her series of videos gaining over 100 million views combined. While the prank was meant in good nature, it clearly freaked her son right out!

In the first video, the mum shows how a new toy she bought for her son changes faces...

In the second video, she presents the toy to her son who immediately loves it... Until he sees the second more scary face!

This is definitely the kind of video that will be wheeled out at this guy's 21st!