[marapuru]

In multiplayer games and chat, an often used acronym was 'su' short for 'shut up', more formal as the widely used stfu.

I remember using it on IRC once in a while when trying to make a longer, multi sentence point and people kept interrupting me.

So maybe a domain like, whydontyou.su would work. Or, for the more frequent speaker: whyinever.su :)