What's at least one (https://www.businessinsider.com/worst-ads-2011-2) terrible campaign (https://tvtropes.org/pmwiki/pmwiki.php/Horrible/Advertising) that makes one wonder, "What were they thinking?" Especially considering that it goes without saying that companies spend millions, if not BILLIONS of money on advertising every year only for it to remembered for all of the wrong reasons (https://www.prweek.com/article/1669112/10-worst-ad-campaigns-decade).

To give you a better idea (https://www.nathanrabin.com/happy-place/2020/11/9/the-short-sad-strange-life-of-mr-delicious):
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The same Tv Tropes article was linked twice and the P.R. Week article requires a registration or log-in. Good topic though

The fat lady dancing around while she's doing laundry. They're trying to sell washers and they have only around 20 seconds--just tell me why I should buy it--I don't think the fat lady is included.

The ad which advises us that women poop. Thanks for the bulletin. Who knew?

The iconic yearly Hershey's Christmas ad with the kisses bells. They HAD to ruin it with an "updated version."

herb from burger king that was a big flop