If you say hello to somebody in the instant messenger or general chat for a second time!

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.

Re-his (Re-his)
n. 1. The creation of homophobia that comes about when Penis is written on something, such as a backpack, and the owner's father thinks having Penis written on their bag is discusting, not funny, and tells them to fix it...the owner of the bag adds two lines and thus has created the word

An expression used when returning from an absence.

A greeting typical in online games, message boards, instant messages, etc.

Usually in reply to "hihi".