Have you heard the news yet? Nintendo is pushing to trademark the phrase "It's on like Donkey Kong." So now that that's off the table, we need to pick the next great Nintendo-game-inspired pop culture phrase. Here are our five votes.
We scoured the depths of web-based slang reference Urban Dictionary to put together our favorite gamer phrases.
Try to use one in a sentence today.

I Got Mario Karted
To be in the lead in something or to have a streak of success, only to have your success snatched away from you at the last moment, possibly through unfair or unjust means on the part of the person beating you. Popularised from the game's frequent result in which a 1st place can be snatched away just before the finish line with a powerup.
In a sentence: "I was so close to making out with this girl, but then Bill Mario Karted the hell out of me by buying her a drink before I could."

Do a Barrel Roll
Famous line in gaming culture, originating in the Star Fox franchise. The line is commonly associated with the character "Peppy", due to his tendency to instruct the player to perform the maneuver, commonly when a scripted ambush or similar event is occurring. Due to his insistence upon suggesting that Fox "Do a barrel roll!" in so many situations, it has come to be parodied as a panacea for all problems.
In a sentence: "I can't finish the last level of the campaign! Any tips?" "Do a barrel roll."

They Got Kirbyed
To take and or steal by devouring or swallowing. Comes from the Nintendo 64 game Kirby in which to steal other peoples powers he would swallow them.
In a sentence: "I turned around and my friend kirbyed all of my junior mints!"

Let's Mario Flute
To get out of somewhere quickly. It is derived from the flute which was popularized in Mario Bros 3, in which you could utilize a flute to quickly move from one world to another.
In a sentence: "That sheepskin better Mario Flute out of here before we make his day."

The Princess is in Another Castle
You tried really hard, but you failed. The phrase originates from Super Mario Bros., where instead of getting the princess at the end of all but the last castle, you end up rescuing a Toad instead.
In a sentence: "I tried to get my doctorate approved, but the it looks like the princess is in another castle."
(Top Image: Flickr user giginer under license from Creative Commons)

Stanley Console by ...
I tried to ford the river and my oxen died.
As a (former?) TM lawyer, I can say this: use that phrase 'til your heart's content.
Even if a registration is obtained on that phrase, it DOES NOT prevent you or anyone else from using AS a trademark and in a way that is "likely to cause confusion" as to the source of the goods or services you are peddling with the phrase.
I.e., don't sell T-shirts that say "Its On Like Donkey Kong" and you are probably good.
insert "[using] it EXCEPT" after "using" and before "AS" -- sorry.
Has anyone, in the last two decades, actually even said "it's on like Donkey Kong?"
I've taken to saying "It's on like Donkey Kong, REGISTERED TRADEMARK OF NINTENDO CORPORATION OF AMERICA".
@KimberlyRose: there is a bar here in Dallas, called Barcadia, that is full of old school arcade games (skee ball, Ms. PacMan, and the like, along with a dangerous game of giant Jenga), and the term is regularly bandied about by 21 year old hipsters who have only played the game in hipster bars that peddle bottled nostalgia (for things they didn't experience).
@MisterR: HAHAHAHAHAHAHAHA!
I can remember saying "do a barrel roll!" recently.