Figuring that you've already spent $9.50 for a movie ticket and $6 for popcorn. this is an example of the sunk-cost.
What is spent?
You are wholly exhausted or worn out if you are spent. Nearly everyone experiences complete exhaustion after ascending a mountain or finishing a marathon. A physical object has outlived its usefulness when it is spent, just as you do when you are exhausted and have used up all of your energy reserves. For instance, burned fuel is no longer able to power a machine, so a rocket may power a space shuttle until it burns out and falls apart. The Latin root expendere, which means "to pay down," is the source of the verb spend, which means "to pay out."
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