Funny / New Super Mario Bros. Wii

As this is a Funny Moments page, spoilers will be left unmarked. You Have Been Warned!

• The way that Bowser Jr. and the Koopalings kidnap Peach. They hide in a cake (with their hair still visible) and then throw it on Peach before running off with it (and her).
• YMMV on whether this is funny or sad (or even both!), but this game shows Peach getting kidnapped on her birthday. The poor girl can't even catch a break on her own special day!
• Some of the runthrough videos you can buy with the Star Coins end up being this.
  • 1-3 has Mario and the Toads using Yoshis to relay Luigi across the level to get easy 1-Ups.
    • Even better when you realize that this is essentially Luigi wins by doing absolutely nothing.
  • 3-5 deserves mention as well. In this one, Mario, Yellow Toad and Blue Toad are constantly using Luigi as an extra platform throughout the level, and avoiding his bubble whenever he inevitably falls into the abyss. Then there's the final section. The Toads have sacrificed themselves to get Mario up a pipe, but he misses it, begins floating down to try and jump off Luigi (who's still in a bubble) only for the latter to steal the pipe for himself! Finally, in the last section, Luigi carries Mario over to the Secret Exit flagpole... only to throw him into a pit at the last second.
• Playing the game with multiple people quickly becomes this, especially if you can round up a full 4.
  • In multiplayer, if all players bubble at the same time (or if the only active player bubbles), the level's music grinds to a halt, Mario and friends lazily drift about, and a jingle plays that sounds like the game is saying "why did you do that, you idiots?"
• On a related note, the Propeller Suit's animation when your character is sinking after the ascent (as long as you aren't shaking the Wii Remote to slow it down) is essentially the character running in place as they twirl in circles. This is amusing enough, but if you have one character carrying someone else with the Propeller Suit, you get the even sillier exhibit of the top character flailing just his arms for seemingly no reason.
• The first battle with Iggy in World 5.
  • Made even more hilarious if you reach said battle with the Fire Flower, and hit Iggy as fast as you can with the fireballs. Rinse and repeat as he is getting out of his spin, and it should bring even more laughter.
• Bowser Jr. getting left behind in Worlds 4 and 6, as well as discovering his father's Koopa Clown Car and subsequently kicking away his own, still battle-damaged from previous bouts with Mario, for his final fight in World 8.
• From the ending, Luigi falling down when attempting to lean on the gondola of a balloon that had already taken off.
• In the post-credits stinger, Larry is shown limping back to his castle after being defeated at the beginning of the game. He then watches the Koopalings flip a defeated Bowser right-side up, only for his castle to topple over on top of them, with a Smash to Black just before impact.