McDonald's is giving away 10,000 free sandwiches for fans who shave their faces

"Shave the date: the McDonald's McRib is back this week and you can get a free one -- if you shave your face.

The fast-food chain is partnering with No-Shave November to give out 10,000 McRib sandwiches to customers in an effort to bring awareness to the non-profit which raises money for cancer research."

To enter, fans must post a photo on social media with their clean-shaven face because "beards + McRib sauce don't mix."