Drama meltdown
From DRAMAWIKI
A drama meltdown occurs when one or more persons goes wildly beyond the bounds of regular drama. They're not just mad, someone needs to HERALD THEIR RAGE that somebody would dare to say that about their mom. A drama meltdown is typically accompanied by a shitload more cursing than usual, becoming hysterical to the point of spouting nonsense, death threats, taking down their web pages and other such overreacting.
A drama meltdown can occur because of a thin skin, an overstimulation of the dramatis gland, or just having a really bad day and being tired of Anonymous's shit.
It is possible to recover from a drama meltdown, provided you sit down and shut up for awhile, and take your lumps from everyone that saw it without sulking or snapping. (That is, if you're not Anonymous. But Anonymous has a drama meltdown every other day and can't really be held to it.) However, be prepared to have it brought up any time you get into an internet argument, since your one bad day will now invalidate you from ever being TEH WINNAR! again.
Examples of famous drama meltdowns: