Two constants in the world of programming: "Two weeks" and "Close of business"
From the client's perspective both of these mean "I have a commitment and I will take great pleasure in demeaning you when you miss them. I will dangle your check above you and belittle you."
From the programmer's perspective it means "shutup. I'm trying to work."
Of course I'm not being serious. When I say two weeks or cob I mean it.