Commercials, unlike music, are not dayparted. They can run at anytime and they can contain just about anything. So we can't say certain words on the air but we can play some of the most disgusting commercials ever dreamed up. Radio Stations will play anything as long as they're making money. Sales doesn't care about content, neither does management.
Advertisers are clueless.
Every radio station has its price. If the money is right, they'll play any commercial, regardless of content or the quality of the commercial. The KRUD Radio Cartoon Archive is located here.