"GUYS!" Rainbow Dash yelled as she burst through the window of the Crystal Palace, "SHINING ARMOR, CADANCE, FLURRY HEART WAS FOALNAPPED AND REPLACED BY QUEEN CHRYSALIS' HEIR!"
A drowsy Shining Armor gazed up at the panicked mare. "Flurry Heart... is bug hair?"
Rainbow facehoofed. "No," she replied, "Her heir. Twilight told me how to spell it. H-E-R-E."
A magenta flash filled the room, followed by the Princess of Friendship's hoof smacking Rainbow Dash on the face.
"DANGIT RAINBOW, IT'S H-E-I-R, NOT H-E-R-E!"
She promptly disappeared once more with the same flash of light.
Shining Armor was still dazed from the rapid flashing, and was currently foaming mildly at the mouth. "So..." he began slowly, "My daughter... is a bug princess?"
Rainbow Dash nodded. "Yup. I can prove it, too!"
"So, you're saying that she's a bug."
Flurry Heart slept peacefully in her crib, her tongue almost comically hanging out to the side as she dreamt whatever it was that baby alicorns dreamt.
"Yup," Rainbow noted, pulling a jar of syrupy fluid from her saddlebag. "and this thing shall prove it!"
One quick slop of goop on the foal later, and... not much happened.
"Nice story, Dash." Shining grumbled, stomping off to continue his nap in the chair across the room.
And then Flurry woke up. She then blinked a few times, before simply buzzing off out the window. That is, she did so after leaving behind the real Flurry Heart in Shining Armor's lap.
As the two horridly confused ponies pondered the event that had just unfolded, Buzz landed at his mother's throne.
"I am sorry, mother. I have failed you." He began, "The ponies nearly discovered my identity, and it took all of my energy to resist the effects of the salve they had applied."
Chrysalis grunted.
"Also, Flurry Heart was very annoying when she began crying from the attic."
More grunts.
"Also, don't you think that Buzz is a bit too generic? I mean, it's pretty much our equivalent to things like Bob and Joe."
A very loud grunt.
"'Cause seriously, ponies have cool names like 'Shining Armor', and 'Celestia' and so on, and then we just have Buzz, Thorax, Beetlehead, Pinsir, and a buncha other names made up using our own body parts and things like that."
A heaving grunt.
"Mom, can I have an allowance exte--"
"NO, BUZZ." Chrysalis screamed from her personal bathroom, "AND WHY ARE YOU TELLING ME THIS AFTER I ATE A THREE DAY OLD BURRITO IN FRONT OF YOU?!"