What we should call the first decade of the 2000's.
Oh-oh implies that a lot of stuff went really strangely, and surprisingly wrong, exactly what has happened.
- Dubya, climate change, terrorism, swine-flu, recession --> all pretty much an oh-oh decade.
Example: "I haven't felt financially stable since the oh-ohs."
"Back in the oh-ohs, weird shit was happening every few months"
"The recession started in the late oh-ohs"
It's what you say when you don't know what else to say to someone, and you're thinking "Wtf", but they're your friend and you don't really want to sound mean. If used with authorityfigures it can also mean "Fuck you".
Example: Amy: So, I made out with Bob last night.
You: Oh.