Dave's World is always one to mess with our heads.

And today's one was no exception, as he revealed what could be the hardest tongue twister ever!

Ready for it?

Irish Wristwatch, Swiss Wristwatch.

If your one of the very few people who find it easy to say the phrase above, well then congratulations because the Dermot & Dave team didn't have the same luck.

Have a listen to the podcast below to hear how Dermot & Seán got on.