Well, damn

Protip: No one who watches MLP actually has any idea about sex, so just write whatever you want for questions like these!

"Spike rotated his arms really fast and Rarity moaned even louder. She was about to lay her egg on the Bed. Steam started to come out of Spikes ears and Rarity could feel the egg forming out of her forehead. There was a sound like a duck quacking and the egg fell out. It landed on the floor beside the bes and Spike smashed it between his hands and collapsed with exhaustion. There was a sound like a harp and a ghost flew out of the egg yolk and into the sky.

“That was the best sex ever,” said Rarity"