Any man will tell you that there is no bigger thrill than rocking up at a public bathroom urinal and finding a stash of ice at the bottom, just waiting to be melted.

The challenge: how much of the ice can I melt with just one bathroom break? Or better yet, can I do it all.

In Sao Paulo, Brazil they don’t use ice though, they use a whole other sort of rocking out.

The Guitar Pee urinal was an ad campaign to promote the Billborad 100 and the idea is simple: unzip, start playing your solo with the strings connected to an amp above you and then check your Mp3 number on the readout above. Then visit www.guitarpee.com and download an Mp3 of your pee.

You’ll never be so glad to have broken the seal.