This happen every day there, ask people who deliver in that area, who works in restaurant there and ask how Jews tip?
I did this job when i was in school long time a go, i have no problem with someone who doesn't have money( even that if you don't have money why you order?) but freaking 2 millions dollars house in westmont and 3 cent tip, i once through it to guys's face told him you need it more than me, he said i call restaurant and will tell them, i dialed the number for him and owner told him, this guy came half an hour drive to bring your expensive order, he kind of backed me and jew guy shut it up)