Interesting find.

[SlashFighter1988]

In New Super Mario Bros. Wii, when you get 99 lives (I used the unlimited 1-up jump trick), Mario looses his hat. I assume it's probably a glitch because when you beat a level, he still does the motion when he takes off his hat normally.  

[Orphie]

I don't think it's a glitch.  

[Waynebrizzle]

I think when his hat is off it's implied to be more of a spinning motion.

Like "Wee! I beat a level! *spin*"  

[Cabron the Swan]

It's an easter egg.

HATS OFF TO YOU FOR GETTING 99 LIVES
lolgetit

I know, that was lame. Don't tell me, tell Miyamoto.

 

[dragn99]

I enjoy losing the hat.

I still want to find out what happens when Player 2 gets 99 lives while playing as a Toad.  

[Montiqueue]

dragn99

I enjoy losing the hat.

I still want to find out what happens when Player 2 gets 99 lives while playing as a Toad.

Nothing happens, unfortunately. :/  

[dragn99]

Totagomi

dragn99

I enjoy losing the hat.

I still want to find out what happens when Player 2 gets 99 lives while playing as a Toad.

Nothing happens, unfortunately. :/

i has sad now