If you're not a fan of moustaches - it's time to lock yourself at home for a month!!
Yes, Thursday is the first of November - and that means men everywhere will be sporting some upper lip hair for MO-vember!
It's all done as a fundraiser for mental health and suicide prevention.
To explain how Movember works, here's Owen Brigstock-Barron from the Movember Foundation, speaking with Didier Kay: