On Tuesday's "Late Night," the host teamed up with guest Selena Gomez to sing his revamped version of a YouTube song by Sam Hart called "Mario Kart Love Song."
Fallon called the original "the greatest love song of all time," explaining that it "combines the timelessness of love with the timelessness of Mario Kart." But he said he thought it should be a duet, so he "wrote up some new verses from the female perspective."
They enhanced their performance by singing dressed as Mario and Princess Peach. Selena appeared on "Fallon" to promote her new film, Spring Breakers.
Check out the video:
"Mario Kart Love Song" lyrics:
You be my princess and I'll be your toad I'll follow behind you on rainbow road I'll protect you from red shells wherever we go I promise
You be my toad and I'll be your peach I'll follow behind you on koopa beach I may take a shortcut but I'll never cheat I promise
No one will touch us if we pick up a star And if you spin out you can ride in my car When we slide together we generate sparks In our wheels and our hearts
And the finish line is just around the bend I'll pause this game so our love will never end Let's go again
The blue shell is coming so I'll go ahead If you hang behind it'll hit me instead But never look back 'cause I'm down but not dead I'll catch up to you
I'll wait for you if you hit a chain chomp And I won't go on if you're flattened by thwomp We'll rank it together or finish on top You're my special car
The finish line is just around the bend I'll pause this game so our love will never end Let's go again
To the Mushroom Cup and the Flower Cup and the Star Cup And the Reverse Cup