Friends: Progressively Crazier Monica & Rachel Quiz

Estranged childhood besties that later became as close as real-life sisters in adulthood, Rachel and Monica's strong friendship was the glue that kept the Friends characters sticking together throughout its epic ten seasons.

Rachel bailing on her wedding day to Barry Farber and finding emotional comfort in her old friend Monica Geller is literally the instigator of Friends' pilot episode and is the spark that fuses everything that comes after.

Without this, Rachel doesn't end up in proximity to Monica's brother Ross, their kid Emma would never have been born and the whole friendship group just wouldn't be the same.

Rachel and Monica shared so many of the most iconic moments of Friends. Who could forget when their lack of knowledge about their friendship group cost them their legendary apartment? Or which celebrity action movie star they once fought over in the living room until Phoebe stops them tearing each other's hair out? Or who joked in a flashback episode that they would likely never see each other again, a totally false and laughable prophecy given how close Monica and Rachel would eventually become.

So take our progressively crazier Monica and Rachel quiz below and as always, you can find out how you did with the answers at the end.