If you're not familiar with the videos on the internet about putting mentos in coke and seeing what happens then you have to check this video first:
http://www.youtube.com/watch?v=hKoB0MHVBvM
Now that you do know what this is a spoof of, you have to see this new commercial from Carlsberg:
http://www.youtube.com/watch?v=MAcc8CPhlO4
Thanks to Blacksaber for the sig!