The Q&A session was dumb, so I think she was tired AND bored.
Also, it's odd that the camera is pointed at Britney when she is asked the questions. Usually, the camera would be pointed at the interviewer.
This did make me laugh though:
"Scream & Shout" or "Me Against The Music"
Britney: I would record both of them.
Woman: No, Britney. You can't sit on the fence. You have to pick one.
Britney: Both of them.