WATCH: Courteney Cox and Lisa Kudrow take on 'Friends' quiz
They were tested on their show knowledge
When Courteney Cox and Lisa Kudrow appeared on American show Celebrity Name Game they were challenged to a round which tested their Friends knowledge.
You can watch how the stars, who played Monica Gellar and Phoebe Buffay in the hit show for 10 years, found the challenge...
We love how they’re still clearly friends in real life too!
Here are 43 things you probably didn't know about Friends - some of them could really have changed things!