Here's what the "Charlie bit my finger" brothers look like now...

Nothing makes you feel older than when you realise something you thought only happened last year actually happened 10 years ago!

Remember the famous 'Charlie bit my finger' video? One of the first clips to go "viral"...

Well, today it turns 10 years old!

The brother's, Harry and Charlie, are now 13 and 11, and their father has revealed the video was never meant to be shared publicly.

Luckily it was shared, because it changed their lives forever - earning them roughly £1 million (NZ$1.85 million) in royalties.

By October 2009 'Charlie bit my finger' had become YouTube's most watched video with 129 million hits.

Charlie and Harry kept the record for 171 days, before it was beaten by Lady Gaga's 'Bad Romance'.

The current number one most watched YouTube video is Psy's 'Gangnam Style', with 2.8 billion views.

This is followed by 'See You Again' by Wiz Khalifa featuring Charlie Puth (2.7 billion views), Justin Bieber's 'Sorry' (2.5 billion), and 'Uptown Funk' by Mark Ronson (2.4 billion).

The video is now the 90th most viewed clip on YouTube with 849,126,156 hits.