Ecchi with premises that make me ask "WTF did I just watch?"

I'm looking for anime that isn't afraid to go places. Not specifically super sexual, just weird and/or does things that most anime wouldn't touch normally. A lot of suggestions I've seen in the past are super hyper stuff where the plot is impossible to follow, or anime that sounds ridiculous on paper but is actually pretty tame in execution, and that's not really what I'm after. Ecchi preferred, but any recs welcome.

Some favorites that come to mind:

-Why The Hell Are You Here, Teacher?

-HenSemi

-Ishuzoku Reviewers

-Grand Blue

-Mysterious Girlfriend X

-Redo Of Healer also fits the idea of what I want in general, but wasn't really my thing

Thanks!