https://desuarchive.org/mlp/thread/38938888/#38941280 

>You lay on the bed for another lazy Sunday night, your upper half propped on the pillows to better watch the TV, which plays at a barely audible volume. You’re not really watching anyways, half-asleep, half focused on the beautiful mare at your side.
>Rainbow is curled under your arm, her head rests on your chest with a book propped against your hip. You watch contently as her little chest rises and falls rhythmically.
>Apparently finished with her page, Rainbow gently flicks to the next one with her nose. But she only looks at it for a moment. She leans her head back into your armpit to look at you, her bright eyes upside down.
>”Anon…”
“”...Yeah.”
>”I need your help.”
>You blink.
“Hmm?”
>”... Help me.”
“...How?”
>”I need scratches…”
>Easy enough. You raise your hand to scratch Rainbow under the chin, but she pushes it away.
>”Not there.”
“Where?”
>Rainbow flops her tail a couple times.
>”Down here.”
“Oh…”
>...Wait, where?
“You mean your tail?”
>”Nuh uh…”
>She does a little gesture with her hoof.
>“Like just under it.”
>...Uh.
“Rainbow…”
>Her face is true neutral.
>”Hmm?”
“You want me to scratch your butt?”
>She shakes her head, sinking it deeper into your armpit.
>”Mm-mn…”
“...So you’re asking me to… what? Scratch your taint?”
>She just stares at you.
>”... Who says I’m asking?”
>You snort, even for Rainbow Dash, this is a weird request.
“Something is wrong with you, girl…”
>She guides your hand from around her to down below. It doesn’t take you long to find it, the tender spot between her two equally tender spots… It’s not that weird, you guess, since you’ve both showered. But still…
>Using your index finger, you gently scratch her taint, Rainbow’s hooves guiding your forearm around like an electronic toothbrush.
>She quietly moans and pets your hand.
>”Yeah…”
“Feel better?”
>”Yep…”
>You retreat your hand from her nethers and rest it on her belly, just above her little teats. Rainbow stares up at you, a little smirk growing on her flipped face.
>”Anon…”
“Hmm?”
>”Smell it.”
>You scoff.
“Fuck you.”
>Rainbow just giggles and turns back to her book, and the peaceful silence returns as quickly as it had left.