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."