Mr. Delivery is a food delivery service with locations in 18 American college towns. For Cinco de Mayo, it issued this coupon offering its users 10% off their orders if they plug in the coupon code "CINCODENOMNOM."
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But some customers figured out a way to get an additional 5% off their orders.
That's because in the coupon's long-winded fine print is an additional coupon code, TIMETORELAX7, that gives people 15% off for reading all the way through.
The Reddit user wheresthecake123 posted the image earlier today, and it has since rocketed to the front page of the site.
A representative from Mr. Delivery confirmed the coupon's existence and said he would try to provide us with information about how many people entered the special coupon code - but he was busy with the dinner rush.