A waitress at a Waffle House in Tennessee was surprised when a customer left her a $600 tip. Lauren Ball, a single mother preparing to go on vacation with her father, had recently paid for her son’s second birthday party and was in a tight financial spot. She had no idea that a customer would leave her with such a generous tip.

Ball said she had a pleasant conversation with two of the men she was serving, and one of them told her that his friend would leave her a huge tip. She didn’t believe it until she found the $600 bill on the table. She was so shocked that it made her sick to her stomach but in a good way.