We all have that one friend who just loves to drop random facts into conversations, just to prove they know stuff. For Dermot, Dave is that friend!

If you’ve ever wondered why airports are laid out the way they are, what you can do at the speed of sound, or what colour eyes you’re best off having, then Dave’s World is the place for you!

Dave was at the peak of his stats today as he rigorously explained to Dermot how a stratovolcano in Equador, which is part of the Andes, is actually the world's tallest mountain. 

He also got us folding, told us the note a toilet flushes in and informed us as to how little the main actor in Napoleon Dynamite was paid. And it's a very raw deal.

You can listen to the fun in full by pressing play in the image above the headline at the top of the page.