Commercials I Hate
whattofix.com
whattofix.com
The reason that commercials are getting more explicit is that people don't remember subtle metaphors. If you make a phallic sandwich, the easiest way to make people remember it is to make a penis joke. The reason no one sells tampons by showing women running through a field anymore is because it doesn't work. The more specific you are, the more effective it is, and that quickly turns into a race to the bottom.
If it makes you squeamish, don't watch it, but I don't think this trend is going to change anytime soon.