Setting: A city street with those narrow alleys attached. Possibly an old time setting.
Commercial: A guy is walking down the street (the camera is viewing like the guy would be) when he hears “pssst pssst hey buddy come here, I wanna show ya somethun. (seedy looking character with a heavy NY accent (sorry NY Kossacks) and a toothpick in his mouth) Guy walks into the alley where the seedy guy is holding a bag that is tied shut. Seedy guy says “hey, I got this sweet little pig in this bag that I can let you have for, let’s say, 10 bucks.” Guy says “not bad, untie the bag so I can see it.” Seedy “oh no man I can’t do that. This pig will jump out and we’ll never catch it. Trust me this is one sweet little pig, it’ll feed your family for a week, trust me.” Guy “I don’t know….” Seedy “ hey man look at me, I’m an honest guy, ya gotta trust me.” Seedy (this part optional) yells over his shoulder “hey honey! I’m I an honest guy or what?” Seedy’s wife appears and says “this man is golden.” Guy buys pig.
Next scene: Guys enters his kitchen were wife is and says “honey, I just bought this sweet little pig from this guy on the street.” Wife looks at him suspiciously. Guy opens bag and a skunk comes out.
Words come on screen with a voice over. “America, don’t buy a pig in a poke. Tell Mitt Romney to release his tax returns.