I've never really found anyone that cheap. Can't really imagine it!
One thing someone I am related to (through a family marriage) does that irritates me heaps is that she goes to this church place where they get donated food close to it's use-by in order to give to poor people. She goes there and helps out to get "first pick" and gets bags of stuff, but stuff that isn't nutritous - really cheap ice cream, biscuits etc and feeds them to her little kids.
Then she spends near $100 a week on cigarettes, and buys pricey and healthy food for herself. Drives me nuts seeing her kids eating bad food :(