In a rather unique publicity stunt, Fredrik Hjelmquist, purposely swallowed a pill that contained a wireless sound system. No, really. He wanted to become a Human Jukebox with music coming out of his stomach.
Here's him explaining what he was going to do:
What he swallowed was called the gutPod and he wanted to publicise "tailor made" wireless sound systems (which I'm assuming his company makes). There's a list of songs that'll play in his tummy on his website and presumably more videos of this "human jukebox" coming out soon.