|1.||plug the pig's ass|
To "plug the pig's ass" is to set in motion a chain of events which will result in an unfortunate, disastrous or hilarious outcome to the person plugging the pig's ass.
in slang: to plug the pig's ass is to fuck yourself over
If Jim were to screw his boss' wife and then brag about it at work, we could say:
"Jim really plugged the pig's ass on that one!"