I get the feeling not everyone understood the commercial.
If you don't tell your parents what to get you, they'll search your room for ideas. The parents search the room, and instead of finding some clue as to what the kid wants, they want his porn stash. (And what a fucking stash it is.)
The parents aren't going to get the kid a porn game, or anything involving porn. Most likely, for Christmas, the kid will get a harsh talking-to, and he'll lose all his porn. His dad will probably "confiscate" it. *wink wink*