It is a moment you will never forget - finding out if you're going to be parents to a little boy or a little girl.
Here at HerFamily, we have seen a vast array of wonderfully creative ways to announce the gender of a baby - but we have never seen anything like this one from a family in California.
The
Calmus family spent three days turning their house into an engineering spectacle on a massive scale.
The three-minute video begins with their son knocking over his sippy cup in his cot - this, in turn, triggers a spinning bottle of talc to hit a toy which flies down a ramp.
The next stage of the contraption goes down the stairs into the office, hits a machine that shoots out ticker tape in the colour of the gender they are having.
The family shared the video on Facebook and the imaginative reveal has gone completely viral with over seven MILLION views.
Check it out for yourself - you will not be disappointed:
