Pinky Lung, hostess at the cafe, said the young man purchased about 500 cups of coffee Monday, enough for the rest of the day's customers to have free beverages, the Canadian Broadcasting Corp. reported Wednesday.
"We asked him his name and he didn't tell us," Lung said. "He said he didn't want to tell anyone."
'Happy' fan videos make Pharrell cry [VIDEO]
Pregnant Mila Kunis wins 'Best Villain' at MTV Movie Awards