WHAT THE?!...Why the Baby Shark song isn't so innocent!

Who hasn’t heard the Baby Shark song 193837373 times over the last few weeks?

The children's song has become a YouTube sensation and has even made its way into spin classes, nightclubs and more. 

Chances are your kids are singing it over and over again until your brain wants to explode! In fact, Baby Shark's YouTube video has been seen over 1.6 BILLION times! 

However it’s not as innocent as you may think - the song's origins go all the way back to a 1990s children's rhyme. 

While the lyrics seem pretty stock standard for a children's song, including that series of 'Doo doo doo doo doo doo's,' the Irish Times reports the song was once slightly more sinister. 

Apparently an English translation of an earlier version of the song ends with the singer first losing an arm to the shark, then their head and...then dying.

'It's not quite as innocent as you might think,' laughs one fan on YouTube.