What is Pig Killer?
1.
A social pariah or outcast, one living on the edge of society, or otherwise shunned by the majority.
Source: Mad Max III: Beyond Thunderdome. Pig Killer is the name of one the characters who has literally killed a pig for food.
In the dystopian, energy-hungry world of Mad Max, in a place known as Bartertown, pigs are used to produce methane gas which provides electricity. It is therefore a criminal offence to kill a pig, and anyone found doing so has the words "Pigkiller" branded or scratched into their chest, and they are treated as a social pariah from that point on.
Everyone at the office hates me -- I feel like a pig killer.