Since Bob's teacher broke Bob's desk and Bob broke the school's computer, he has to have a job.
Bob: Hey Vexy Smurf, why are you here?
Vexy Smurf: I got fired for breaking your desk and you got expelled for breaking the school's computer.
Bob: How do I get a new desk and a new computer?
Vexy Smurf: You have to save up for $1300 because the computer costs $600 and the desk costs $700.