Top definition
A slob of Irish decent who doesn't seem to care about the degree of filth that they live in and makes no effort to better their situation. Most likely poor, but not always. Pig Shit Irish is more of a frame of mind then a economic status.

Opposite of Lace Curtain Irish

Even more white trash then Shanty Irish.

Most likely comes from the stereotypical drunk, potato eating, pig farming Irish.
Shanty Irish piss in the sink

Pig shit Irish piss on the floor.
by RIP Frank Grimes August 23, 2009
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