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An Oxfam shyster is someone who tries to get a further discountin a charity shop(which may or may not be a branch of Oxfam) or who attempts to use the shop as a rubbish bin. Typical tactics include yelling, "I want to donate these, thank you!", leaving a large bag of (say) books at the counter and scooting out the door. Closer examination reveals a single layer of halfway good books (or just covers) overlying a mass of unsaleable and often physically unreadable mulch. The shop is left to discard the mulch because the Oxfam shyster couldn't bother their pretty little fat white arse to take the stuff to the dump themselves. Unlike the private citizen, the shop, being a charity, is (at least under Irish/ EUlaw, dunno about America) obliged to pay a heavy charge on recycling, but who cares? As long as the Oxfam shyster gets their narcissistic businessover and done with, that's fine with them, they're all right, Jack, and that's all that matters.
Another tactic is demanding a further discount off already rock-bottom prices because they need the money for something else. Foodfor the kids, petrol to get home, tins of dog or cat food, you name it. This is typically preceded by a pretense that they can't read price tags, and accompanied by an attempt to make it look like butter wouldn't melt in their mouths by saying they don't want the goods for themselves, but for a kid/relative/whatever who might need the info at a difficult time. Listen, love, if you need more money for petrol but can't afford the extra price of a cheeseburger, have you considered cycling?
Oxfam shysters can be of any ageor either gender, but they tend to be elderly women more often than not, probably because this is the slice of the demographic best able to pull off the loveably-gaga routine, while at the same time being least likely to get a richly deserved kickin the toothless jawbonefrom the sort of well-meaningsucker who is likely to be running the shop. Beware the Oxfam shyster.
An Oxfam shyster is the lowest of the low.
See shop, charity, parasite, gaga, pretend, pretense, sucker, narcissism, narcissist