Well, Chick-fil-A has their "Eat Mor Chikin" ad, where cows are trying to encourage people to eat more chicken and oppose gay rights, but how about something similar for another chicken restaurant chain, but without all the anti-gay stuff? Well, how about this idea for KFC:
Cows are being transported in a truck, and as they drive along slowly down a boulevard somewhere, they pass a McDonald's (or a knock-off, for legal reasons). And as they pass said McDonald's, they all notice a sculpture of the clown mascot in front of the restaurant, and one cow says to the others: "Clowns always creep me out." And another cow says: "Yeah, they scare me too, but I don't know why." And then we cut to a KFC restaurant interior, and the announcer says: "There's no clowning around at KFC for our (whatever) chicken meal! It's only (however much) at participating locations! So come on by and stop clowning around!"
(This might also make a good internet or print ad for PeTA. {I have made fun of them plenty of times on this blog, so I kind of feel like I owe them something.} The picture would show cows looking through the slots in the side of the truck transporting them at the statue of Ronald McDonald in front of a McDonald's, and the statements they make about being creeped out by clowns and being scared of them but not knowing why would be superimposed over the picture as comic-strip style speech balloons. Then PeTA could have a blurb of text underneath the picture to make whatever hostile remarks about McDonald's they'd like to with regard to why the cows might have good reason to fear a clown.)