Pansy's Lateral Thinking Puzzle #2: Case of the Cupcake Stomping (UNsolved)

[Pansy]

Pinkie Pie goes over to Rainbow Dash's house for a party, and during the party goes to talk to Rainbow Dash. Rainbow Dash then grabs a perfectly good, and tasty cupcake made by Pinkie Pie, throws it on the ground, and stomps all over it out of the blue. A little bit afterwords they both go on partying, happily, as if no good and tasty cupcake was just wasted and stomped on. Why is this?