Callback

A joke that references an earlier joke, popularized by the TV show Arrested Development.

A function you pass to another function which runs the function you passed to the function you are calling, often this function that calls the function you passed to the function supplies your function with parameters created from results of calculations within the function you passed your function to.

1) a call that will occur in 32 hours instead of planned 2 minutes only to tell you that you have to wait two more weeks for your problem to be solved

2) a customer service call happening just for the sake of calling back, the customer advisor has no idea why is he calling the customer