2D Box in Super mario 64 DS ?

one day I was on youtube looking at supermario 64DS stuff and found his video of secret box??

and people think its got with waluigi but it doesnt its just romor but what is it really?

It would help if you linked us to the video.gonzales1

sorry here is link to show you

http://www.youtube.com/watch?v=Ihxr5xW_v2M

WTF?! blue DS wot do mean

WTF?! blue DS wot do mean

pieandcusturd

Less Youtube, more Hooked On Phonics.