#BBCtrending: What Movember means to Indonesians
5 November 2013 Last updated at 11:52 GMT
Thousands of men around the world are growing their facial hair this month for Movember.
The charity campaign aims to raise awareness about prostate cancer and other men's health issues.
#BBCtrending has been taking a closer look at the phenomenon and found that Movember is incredibly popular in Indonesia - at least where social media is concerned. Why is this the case?