Dreams are never straightforward, are they? If you're a dream analysist (have to say I don't know what the profession is called, I should call their union), have a crack at this one..
I'm in the cafeteria (wtf) buying food. When I get to checkout, it turns out I don't have enough cash to pay for it (although I use cash about twice a year when I'm out of the country). I tell that to the cashier, she says "you're good for it" :wth: For some reason, I'm grossly dissatisfied with that and I frantically start to check all my pockets. Turns out I have the exact amont, not a penny to spare. The end.
Could have something to do with your troubles surrounding deadlines