Rainbow Dash isn't quite sure how she's in her current situation.
Spitfire was walking towards her, hips swaying, and Rainbow Dash was in the nude, currently preparing for Spitfire to give her a lapdance.
Ever since Spitfire found out about Rainbow's current predicament (namely, that her friend Twilight had accidentally given her a rather large penis that would only go away once Rainbow ejaculated on or in another mare), Spitfire started giving Rainbow Dash rather... strange looks.
A few days later, Spitfire calls Rainbow into her office, telling her to get nude.
Spitfire is, mind you, not naked, but that was actually Rainbow Dash's idea. Spitfire was surprised to hear she has a fetish for revealing clothing, often finding it more arousing than a mare being outright naked. Spitfire's uniform was, as it happened, quite revealing.
Spitfire snaps Rainbow Dash out of her thoughts with a firm grasp of the crotch. She raises her brow.
Rainbow nods.
Spitfire smirks.
Spitfire turns around, giving Rainbow Dash a view of her firm, toned ass, albeit covered by a rather tight skirt. Spitfire lowers down onto Rainbow Dash's crotch, all the while wiggling her hips to an imaginary beat.
The moment Spitfire's ass touches her crotch, Rainbow lets out a groan of pleasure. Spitfire starts wiggling her hips, while Rainbow's cock erects. Spitfire can feel it, and it's even bigger than she imagined. She moves her ass up and down, grinding against the titanic cock.
Rainbow can't believe the pleasure she's feeling. It's not just the lapdance either. The thought of what's happening, Spitfire seductively grinding against Rainbow's crotch, it's unbelievably sexy to her.
Spitfire moves her way up the monster cock. She reaches Rainbow's head, and uses her tail to lift her skirt up, hotdogging Rainbow's cock, but then something unexpected happens.
It's then that Rainbow discovers Spitfire doesn't wear panties.
The moment Rainbow penetrates Spitfire's tight pussy, they both let out a gasp, followed by a moan.
"Spitfire, you didn't say anything about this."
"I didn't plan this... but I ain't complaining."
Spitfire moves up and down, her tight walls around Rainbow's thick cock. She gyrates her hips, rolling Rainbow's cock around inside her, and moans. "Mm... This is the best sex I've ever had."