Prompt: Yang and Nora can't stop trying to one-up each other.
Weiss sighed, and Pyrrha mirrored her. This whole ordeal was her own fault, really, since she had been the one to muse aloud that Nora was the only person at Beacon with an appetite more voracious than Yang's. She should have known her girlfriend would take it as a challenge, and that Nora would egg her on until, well, this happened.
It had started with a pancake eating contest, officiated by Blake and Ren, who were as close to impartial as anyone on their teams could be. When Yang won that (by half a pancake), things had begun to escalate. A best-of-seven set of sparring matches (Nora won, 4-3), a race to the Emerald Forest and back (they had both managed to get horribly lost until Ruby had gone looking for them. It was deemed a draw), and a girlfriend bench-pressing contest (Also deemed a draw, on the grounds that Pyrrha weighed something like double what Weiss did) hadn't been too bad, but then that wily faunus just had to get involved.
As Yang and Nora had agonized over what else they could compete on, the most devious smile Weiss had ever seen had crept onto Blake's face. They had closed their book – which, given what book it was, should have been a dead giveaway for what was to follow – and suggested that the pair settle the matter in bed.
Before Weiss and Pyrrha could recover enough to muster an indignant shriek, they had outlined the terms. Yang and Weiss would have team RWBY's room to themselves for the night, and Nora and Pyrrha would have JNPR's. The remainder of the teams would stay the night with team CFVY, and in the morning Weiss and Pyrrha would be called on to pass judgement. Weiss's indignation had faltered just enough for her to allow herself to be roped into it. She could easily have said no, but Yang could be very determined when her competitive side was roused, and Weiss's curiosity got the better of her.
And now she could hardly walk. Next to her, Pyrrha's knees were still shaking a bit. Worth it.
"So?" Yang asked impatiently, "Who won?"
Weiss gave Pyrrha a long-suffering look, and received a shrug in return.
"Yang, you do realize we can't actually answer that, right? There's no way for us to compare something like this without-"
"Oh! So tonight we should swap and then you'll be able to-"
"No, Nora."