"Everyone was super-happy. I just told them to make sure they paid it forward as well."
Faith Martin, whose sister Claire owns the kiosk and whose mum Rhona roasts the coffee, said she didn't know the man's name but knew he lived locally because she had seen him before. On another occasion he had left $20 to pay it forward but, curiously, he never bought a coffee for himself.
She described him as casually dressed and aged in his mid-30s.
"Pay it forward" is an expression for repaying a good deed with an act of kindness to another person, usually a random stranger. The idea of paying it forward goes back at least to ancient Greece but the phrase was popularised by the 1999 novel Pay it Forward and a movie of the same name the following year.