Recently, a certain picture of Delhi Chief Minister Arvind Kejriwal was doing the rounds on social media for its stark similarities to a rather silly Snapchat filter which puts a wreath of flowers on your head.

Everyone who uses Snapchat has come across this goofy and hilarious filters and let’s face it – they’re pretty cool and a lot of fun.

But do you know how they work? This Vox video tells you that there’s some pretty serious engineering behind it. Watch the video to find out!