The unfortunate habit of n00bs, idiots, and morons to perpetually use the caps lock key, even when "yelling" is not implied. This is usually accompanied by other obvious examples of ineptitude, such as poor grammar, spelling, and total lack of punctuation or use of paragraphs.
They seem to lack absolutely any capacity to use a keyboard, and clearly struggle to achieve even the most basic of communication tasks, thus rendering them "handicapslocked".
When your working on the jobsite, and your boss says “hire handicaps and watch them work” probably means your being a professional dumbass, and can’t do a simple task properly.
Hey jerry, can you help me cut down this tree? “Sure, I’ll grab the clippers!” (Boss) “hire handicaps and watch them work.”