Pinkie Pie barged into the Legitimate Research building and met Barry Steakfries who gave her one his jetpacks: The Party Jetpack!
 
Together, Barry and Pinkie now fly around with their many jetpacks, take Flash the Robot Dog for a walk, ride around in vehicles (like the Crazy Freaking Teleporter, the Badass Hog, the Profit Bird, the Little Stomper, the Sleigh of Awesome, the Wave Rider, Mr. Cuddles the Robotic Dragon and my favorite, S.A.M.) , slaughter truckloads of monsters (specifically zombies whose heads Barry blows to bits with his shotgun) and laugh at Professor Brains’ face while he’s in prison!

Then she looks at the price. 25000 coins… No thanks.