01/10/2012 06:55 BST

Max And Ivan's 'Dirty Van' (VIDEO)

Everybody knows it's impossible to walk past a dirty van without either writing a rude message or drawing a willy on it. Preferably both - if you have the time, inclination and necessary creative skills.

This new BBC sketch from comedy duo Max & Ivan perfectly demonstrates this Great British Tradition - but then ends up being a bit sad. The message? Even grown-up blokes who think it's hilarious to draw willies on the side of vans have important things to think about, too. Waaah!

Want more brilliant comedy clips from Auntie Beeb? You're in luck!