Updated

The 19-year-old manager of a suburban-Minneapolis Dairy Queen store is being praised for a good deed that's gotten attention on the Internet.

Joey Prusak says he was just doing the right thing when he stood up for a visually-impaired customer who didn't know he had dropped a $20 bill on the floor last week. A woman behind the man quickly pocketed the cash, then claimed it was hers.

Prusak refused to serve the woman unless she returned the money. She didn't, and left the store. Prusak then took $20 out of his own wallet and gave it to the man.

Another customer saw this and wrote to Dairy Queen. Her email has been circulated on social media. Now people across the world are thanking Prusak for his act of kindness.