The act of having sex in a freezer while your partner holds an ice cube hostage in their arse. At climax the ice cube is released, ejaculated up on and crushed in to a refreshing beverage.
Sam was having sex with his wife in the freezer while she held an icecube hostage in her arse. after, he spunked on the icecube and put it in a blender for her to drink. This became the Seattle Slush Puppie
Deranged, sexually-frustrated tweens who write salivating prose detailing their fantasies of celebrity guy-on-guy orgies, commonly known as Slash Puppies (a distant cousin - or niece - of the horndog. See Harry Potter, Green Day and McFly - sadly often involving wands, drumstricks and similarly phallic-shaped objects being shoved into places they really shouldn't be going. Said literature is often highly disturbing for non-aficionados.
The new hentai? Only time - and the internet - will tell.
Slash Puppies can be found in action on the official McFly fanfic board.