someone who spends their whole day on myspace and have nothing better to do but sit on their asses typing about how stupid and ignorant they are.
they are capable of typing more than 1000 words a minute

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.