The Situation:

You're in Dublin airport. Everything is overpriced. You're starving, thirsty, and have to wait here for the next 5 hours. Internet is 10 cents a minute, and you know you have a bunch of new emails. You have only €8.10 left on you.

The Question: How do you spend your money?

The Answer:
€1- McDonald's curly fries (before the one-way security checkpoint)
€4.90- turkey & cranberry sandwich in the swanky bar with armchairs and low lighting
€2.20- internet

Drink tap water from the bathroom. Steal the untouched half sandwich and half soda from the couple sharing a table with you in the bar. Screw the "your foreign currency saves lives" charity.