"Yeah just give me a minute!" Rainbow said getting up and cleaning up a bit before answering the door. "Hey Rarity. Come in." Rainbow stepped aside and allowed the shapely white unicorn to come in. I can't wait to plow that fat ass and sweet little pussy.

"Darling, is there a horny stallion in here?" Rarity asked scrunching her nose as the overpowering sent of stallion hit her.

"You can say that." Rainbow said as she licked her lips. "Hey Rarity?"

"Yes darling? What is it?" Rarity asked not turning around.

"I'm ready to take you up on your offer. The one about you teaching me how to please a stallion."

"Oh that's great news, darling! I thought you would never ask!" Rarity exclaimed as she hugged the prismatic mare.

Rainbow smiled lustfully and pushed her to the floor.

"Let's get started then." Rainbow said as Rarity finally sees the source of the smell.

"Dear Celestia! What in Tartarus is that!" Rarity exclaimed her eyes widening.

"It's the dick you'll be sucking and fucking. Now get to work my slutty Rarity." Rainbow said as she moved to Rarity's mouth.

Rarity inhaled the musk from the dick that rested upon her face. It drove her crazy with lust. She stuck her tounge out and lapped at the balls working her way up to the glistening tip. The taste of her friends pre was what drove her to act completely on her primal desires and suck on the thick dick. Sliding in down her throat and deepthroating it in one go. Rainbow and Rarity moaned as Rarity started to bob her head in an instant rhythm.

"You really are a slut Rarity. Knowing how to expertly deepthroat my dick without gagging." Rainbow moaned softly and bucked her hips harshly.

Rarity didn't hear a word as she kept sucking harder. Or so Rainbow thought. Rarity removed the dick with a wet pop and started stroking it and licking it.

"Yes I'm such a slut. Let me be your slut. Fuck me. Please." Rarity begged with lidded eyes. "Please Daddy." Rainbow put a hoof behind her head and shoved her dick back into Raritys throat before bucking her hips harshly.

"Suck my fucking dick you slut." Rainbow said as she shoved Raritys head to her base and started cumming.

Author's Note

I know Raritys actions are not very believeable, but I'm sticking with it. Once it gets published, it isn't getting changed. You can't do that with real world stories, ones that are in books. So I'm going to do it like that.