An incongruity between expectation and result.
De place where de cowboys ride!
A: Someone who has his or her own alto clarinet.
The baby carriage is the result of last year's fun on wheels.
One costs a lot of money to maintain, keep running, and give you the results you want. The other has four wheels.
Because it was irony.
Me : Job. Interviewer : I mean what do you want from this job Me : Salary