Not bashing your opinion, it's just hearing that saying just has it that I can't resist posting this :
https://www.youtube.com/watch?v=Nk_zpMory-0
As for me, off the top of my head...
Manyuu Hikenchou
I generally like fan service anime, but this one took things in a little too far to the point of being gross. Dropped this after two episodes
Platonic Heart/Master of Martial Hearts
That ending...if it was going to end like that it should have just been a straight up hentai OVA.
Love Hina
Between telling almost the exact same joke over and over and the central Keitaro/Naru pairing less believable than an episode of Ancient Aliens (not to mention the only likable heroines ended up as side characters) I had to fight the urge to hunt down and throw every DVD I bought of this series at the guy who recommended it to me when I mentioned one of my favorites was Tenchi Muyo. And before anyone mentions the manga, while I'll admit that had some good stories, the ending was crappier than the anime one.