How would it even be possible to have sex with the mermaid with the fish bottom? I don’t even know if that would work. Anyway, I’d pick the human bottom.
FWIW, one way to solve this problem would be to postulate mermaids to be marine mammals (they do have a placental umbilicus and mammaries after all in most depictions...), so their bottom part would be more akin to that of a dolphin, not a fish.
Alternatively, a sufficiently bawdy work—which one is likely to be if it brings up the Mermaid Problem in the first place—may simply point out that lower half aside, well… She’s still got a mouth, ain’t she?
How would it even be possible to have sex with the mermaid with the fish bottom? I don’t even know if that would work. Anyway, I’d pick the human bottom.
FWIW, one way to solve this problem would be to postulate mermaids to be marine mammals (they do have a placental umbilicus and mammaries after all in most depictions...), so their bottom part would be more akin to that of a dolphin, not a fish.
TV Tropes explains the (Infinite?) Mermaid Problem:
Oh, duh, oral. I was assuming “have sex” didn’t include oral.
Anyway, my answer is still the same.
Thanks for the link on the mermaid problem (and I managed not to open any other TV Tropes pages somehow!)
So you want to be squeezing this?
Ew.