Co-worker was on Meth/Speed for 5+ years

Here’s one for you. A co-worker in QA was on speed/meth and nearly got his 5-year sword. Anytime you talked to him he would just sit there babbling really quickly. He’d never shut up. Because he was on speed. As far as I can tell he was ALWAYS at work. I think he never slept or slept at work. He his his own compatibility room with machines. I had no idea until after. I’m not at all familiar with drugs.

The funny part of the story is he almost got his 5 year sword before they finally fired him.