Rainbow both hates and loves soap.
She hates it because it’s slippery. It slides off her feathers, it slides out of her hooves, and, infuriatingly, it slides around on the bottom of the tub when she tries to pick it up. Instead, she has to pick it up with her mouth. Slippery, disgusting soap held fast between her teeth as she tries, in vain, to cleanse herself. And the worst part is, apple soap does not taste like apples. Not one bit.
But she also loves soap. She loves it because it slides off her feathers, it slides out of her hooves, and, delightfully, it slides around on the bottom of the tub when her girlfriend tries to pick it up. Slippery, amazing smelling soap, held fast between Applejack’s hooves as she rubs it all over her back, neck, along her haunches...
Yeah, what Rainbow would give to have Applejack in the bath with her right now. Because right now she hates soap with a passion. Try as she might, she keeps losing it in the cooling, murky water. She lets out a frustrated growl and hits the side of the tub. She tries several more times, and each time loses her hold on the soap.
The door opens and closes quickly, and before she can turn around, Rainbow feels a pair of hooves around her neck and a muzzle in her mane.
“Rough day?” asks Applejack, rubbing her hooves into Rainbow’s chest and lower neck.
Rainbow sighs. “Yeah, a bit.”
“Anythin’ you want to talk about?”
“Kind of... I guess. Weather team was really bad today. Something was just... off... and they couldn’t keep it together.”
Applejack trails kisses along Rainbow’s ear, hugging her pegasus closer. “That all, or is somethin’ else buggin’ you too?”
Rainbow looks down and glares at the water. “Can’t keep the stupid soap in my mouth.”
Smirking, Applejack leans down and picks up the soap, dragging it through Rainbow’s fur. “Want some help with that?”
Rainbow nods and Applejack cups the soap in her hooves and massages her girlfriend’s back, feeling her muscles relax under her touch. “Well, I think I know just the thing to cheer you up.”
“Applejack, we tried that in the bath already. It didn’t work very well.”
Applejack snorts. “I didn’t mean that, Rainbow. I meant we could go downstairs and bake one of them pies you like so much, then maybe we could go for a walk.”
“Oh, eh-heh. Yeah.”
Applejack turns Rainbow around and presses a kiss into her muzzle, finishing washing under her wings as they flared. “And then maybe we could do... that.”
Rainbow returns the kiss, and presses her nose against Applejack’s, closing her eyes. “I think... I’d like that.”
Stepping out of the bath, the two dry each other off and make their way down to the kitchen, Rainbow leaning heavily against Applejack, wearing a contented smile.