IPhone users will definitely get a kick out of the skull Candy iPhone FMJ headphones.

The Skull Candy iPhone FMJ (Full Metal Jacket) headphones were designed with the iPhone in mind, and have that longer port plug-in. They also have a microphone built in, as well as a button to pause the music or hang up a phone call. The headphones are made of a durable material that is designed for users on the go.

For those that aren't iPhone users, the FMJ works great in other headphone jacks as well, giving clearer and, in some cases, louder sound. You can purchase the iPhone FMJ on the Skull Candy site for about $79.95.