Ricky Gervais might be known for The Office, Extras and some divisive awards show hosting, but for many he's equally well known for his series of 'bathtub selfies'. The comedian has for the last few years regularly posted images on social media of himself in a bath, making the most ridiculous faces he can (all very safe for work, of course).

With that in mind, Tonight Show host Jimmy Fallon decided to battle it out with Gervais when he appeared on the show earlier this week. Kids sent the show their best 'funny faces', and Fallon and Gervais did their best to emulate the weird, amusing and sometimes improbable facial contortions.

Hard to say who was the definitive winner, but they were both fully committed to the challenge at hand: