That last one is probably the source, it got reposted to something awful around that time and that's where I grabbed it.

It was in a thread where people would discuss various something awful things, specifically the fact there was a lot of posters in those threads who didn't do anything but talk about something awful. I've used it as a mascot for every meta forum I've made since. I cut my posting teeth in shitredditsays, a community of people who only posted on reddit to talk about reddit, and I never wanted that to happen again.