A fanfic where Marcus Flint and Oliver Wood are dating but both are crushing on Percy Weasley and they come up with the crazy idea to involve him in a bet (which Marcus and Oliver do constantly) about which one of them is better at giving head and need an objective referee. To which Percy is absolutely stunned, but for different reasons.
Oliver: So, we need to settle a bet between us and need your help.
Percy: Why me?
Marcus: Because you are objective and analytical.
Percy: Oh. Go on.
Oliver: The bet is who is better at giving head.
Percy: ……… as in?
Marcus: Sucking cock.
Oliver: Exactly!
Percy: *too stunned to speak*
Marcus: Didn’t you say he’s cool with gays?
Oliver: He is!
Percy: Oliver…
Oliver: Yes?
Percy: …did you forget… yet again… that I am… a Transman?
Oliver:
Marcus:
Percy: o.ô
Oliver: Right.
Marcus: That’s a problem because…?
Percy: No cock to suck!
Oliver: Right.
Marcus: You FORGOT that your best friend is Trans???
Oliver:
Oliver: Right.
Percy: I swear I have to remind him every school year.
They still somehow end up together in a throuple.
Oliver isn’t ignorant, for him Percy is simply male, always has been, and treats him accordingly including forgetting that some body part of Percy might not have gotten the memo yet.