A pizza delivery driver was pretty upset after he delivered a pizza the other night to a couple who tipped him just 33 cents!

The total bill was $22.67, and the couple gave him $23.00 and told him to "kepp the change."

But the next day, he arrived at work to a BIG surprise!

The couple realized their math mistake, and went to the store to drop off a $20.00 tip and this note:

 "We would like to apologize for our impaired math skills and thank you for the work you do! We appreciate it immensely! -Tom and Jenn"

Click here to read the full note.