Dumbest commercials I've seen. My gosh, too many to even begin! I asked my sister this question, and she shouted "Oh Lord!"
Several Geico ads come to mind, especially ones that started out as a product for one thing, and turned into a Geico ad ("This product is awesome, but it can't save you 10 percent on car insurance by switching to Geico!" or something like that) I never liked the cave men commercials, either. The gekko also got old after the first few commercials, too.
Energizer's "bait-and-switch" commercials. You think it's an ad for some product, and suddenly, it's interrupted by the Enegerizer Bunny coming in ("still going!")
There was an Orkin ad where la cucarachas were crawling all over the TV screen, and I always thought there actually were cockroaches crawling on my screen! (when it comes to creatures that have more than four legs, I am a complete priss)
Head on, apply directly to the forehead! Head on, apply directly to the forehead!
There's one I've seen lately when I'm at my parents' house that looks like a Justin Bieber wanna-be singing about insurance or a law firm, or something like that (I hate Justin Bieber's music!)
Considering I collect old commercials, you'd think I'd have an easier time coming up with stupid ones that I've seen, but I can't! Go figure.