A generic, and sometimes humorous, reply to someone who took way
too much time describing something, while the
description would've been sufficiently clear and complete with less words. The term is both used by impatient kids when they can't concentrate long enough to read more then two sentences, and the more intelligent
generation-X poster when the "long post" in question could've been described just as well, but much shorter, this comment can be taken either way.
Also a reply to long, attention-whorey spam topics.
Politically
Involved Chap: (long rant about
the state of affairs in the
presidential houses of middle-west Europe)
Nooblet455: OMG TOO LOGN DIDNT READ!1
SpamClown69: (Long rant about rubber duckies and why he loves to rub his genitals with them)
MatureFolk: Too long, didn't read. Idiot.