More like a thundering herd.
One Halloween my buddies and I all wore Holstein cow style spotted tee shirts, shorts, shoes, socks and baseball caps with horns on them, and an udder sewn onto the belly of the tee shirt. We topped it off with some Ray Ban Wayfarer sunglasses. We all stuck together as a herd, and whenever people would come over to us we would all mooo and move in the opposite direction. It was great, we won best costume. LOL