Pajama pants in public. I could understand like, running out to the corner store to get a pack of smokes or a dozen bagels or something, but don't wear them out to an Applebee's..even if you are only there for the half priced appetizers. I'm all about individuality and "not giving a crap," but nothing screams dirtbag more than this
Also, I feel like I've said this before, but can't find it, so: Nobody knowing how to do their job.
Let me explain: Small example, you go out to eat and you order a burger, no onions. Sure as shit if comes back to you with onions on it. "No one"
The other day I'm driving to work and I see a billboard put up completely upside down. How do you fuck that up? "No one"
This is probably the best example that we all might know and love:
http://www.youtube.com/watch?v=4T2GmGSNvaM