A 19-year-old waiter has been left in shock after a kind-hearted customer left him a tip of $1,000 (£640).
Brendan Motill had only just started his job at Smokey Barque BBQ in Frankfort, Illinois when he was left the generous tip alongside a $20.31 bill.
The mystery customer wrote a note on the receipt and said that it was simply a "random act of kindness" to show that the world isn't always such a "negative and violent" place.
Thanks for your kind service! You’re doing a great job as a server. I’m not sure what your hopes and dreams are in this life, but I hope this tip helps.
My hope is that people were more peaceful to each other. The world can be so negative and violent, I commit random acts of kindness to let others know there can be another way. Peace be with you brother!
After he received the tip, which was more than 50 times the bill, Motill told ABC 7: "My jaw dropped. I couldn't do anything. I was in shock."
The teen now hopes to use the money to fund a college course in accounting.