I have seen a few people complain about that pigs out of ass line, here and elsewhere. The fuck out of here. That line is sick. If he said it on SSLP people would have eaten that shit up. Fuck it, if it was on Brainless people would like it. Maybe it sounds out of place on Legacy. Maybe.
But then again, when you break it down, the shit is beast. And works on that record.
When pigs fly out of my ass is of course an old expression -- he's exaggerating that point by saying that's not even good enough to describe how unlikely the odds of you beating him are. It not only has to be pigs flying out of his ass, but they have to be in flying saucers filled with sausages of their own kind. That shit is funny.