This isn’t the official Curiosity twitter account, it’s much better.
https://twitter.com/SarcasticRover
A sample from today:
"Been parked in the same place for a week. If this was Detroit, I’d be nothing but a burnt-out shell by now. GO ECONOMIC RECOVERY! "
"Did a science on the atmosphere - found trace levels of Helium-4, Carbon-12 and something called “Mambo Number 5.” "