Greg Brown has a song about 4 wet pigs...
i think he worked in a pork processing plant in Iowa...
the song says...something about 2 of the pigs..
hanging out at the slop trough smoking their cigs
hoping to God they never get big
and dancing all night at the pig town jig

it has mention about ham, spam and other products
then says "throw their little eyes out in the rain"

not really complementary of the pork industry....at all!