Nice one, Cyril.

A brief, colloquial remark of approval or acknowledgment directed at someone named Cyril. Depending on tone and situation, it can function as sincere praise (“well done”) or as dry, ironic commentary (“that was a blunder”), since “Nice one” is frequently used both ways in spoken English. With no identifiable author, setting, or surrounding text, the line reads less like a stable literary quotation and more like a fragment of dialogue or a catchphrase whose meaning is carried primarily by context, delivery, and shared knowledge between speakers.