Coinstar
Permanent link to this comic: http://xkcd.com/995/
Image URL (for hotlinking/embedding): http://imgs.xkcd.com/comics/coinstar.png
[[A mischievous, curious person empties a small bag into a whrrring machine]]
[[Machine makes progressively less happy *kachunk*, *tshhhh*, *clickclickclick* and *grind* noises]]
[[Machine pops, then beeps in a tone of utter defeat]]
Holiday tip: Coinstar does not handle chocolate coins well.
{{Title text: Plus they take like 9%.}}