It's meant to be funny and it was funny, but in reality, this this dude wouldn't keep working for that manager unless he had severe self-esteem issues. I've managed to write some functionality that was scheduled to take a month in a weekend (I'd figure most programmers have at some point), and it definitely didn't come back to bite me in the ass at all. If this is what happens, get another job. Someone else will be more than happy to hire you.