"Chicken on the Rocks" is a song by electronic music pioneer Jean-Jacques Perrey. It was featured in the Season Fourteen episode, "Medicinal Fried Chicken". This song plays as the backing music while the men bounce on their testicles through town.
In an attempt to buy pharmaceutical marijuana, Randy Marsh induces cancer by microwaving his testes, thus making them grow to an absurd size. He convinces his friends to do the same, so they can also obtain the drug legally.