I very rarely boast or brag. Because I know I am only fair. And there is always someone better no matter how good I am.
I remember in TFC there was a guy that was a great spy. And he was. All his boasting was true. This guy had skill. Then one day in the forum server he got nailed hard. Couldnt even come close to the flag. Let alone touch it. His score was 0/43. About an hour later people on the forums dogged him hard.
I love boasters. Even the skilled ones. Eevntually they boast one time to many and then get owned. After that its forum time to post every critique of the guy and he loses so much face.