Pascal's Scraps

"Nah, changelings aren't bugs," Lyra said. "They're Fae. The queen is a political figure."

"So, they're not going to rape us and… and fill us with their eggs?" Rarity asked hopefully.

"No, they're still going to rape us," Lyra answered.  "Instead of sperm, changelings generate parasitic larvae in their genitals. They cum in your mouth, and they larvae burrow into your stomach lining and grow until your belly bursts open, then they eat your body. They go for the brain last, so you'll feel every agonizing instant of it."

Rarity's jaw dropped, but Derpy spoke up angrily.

"You're just making that up! That's not how it works at all!"

Rarity breathed a sigh of relief, but Derpy continued.

"Changelings reproduce by impregnating mammals. Their cum is really a serum of hormones and stem cells that turns you into a hermaphrodite and converts your digestive tract into a second uterus that generates its own sperm. One you swallow their cum, you're doomed to birth, shit, and vomit larvae until you starve to death."