Provide the theme summaries for the following conversation: 

Rita: I'm so bloody tired. Falling asleep at work. :-(
Tina: I know what you mean.
Tina: I keep on nodding off at my keyboard hoping that the boss doesn't notice..
Rita: The time just keeps on dragging on and on and on.... 
Rita: I keep on looking at the clock and there's still 4 hours of this drudgery to go.
Tina: Times like these I really hate my work.
Rita: I'm really not cut out for this level of boredom.
Tina: Neither am I.

Summary: 
Rita and Tina are bored at work and have still 4 hours left.