Idk why but one of your previous Frobin asks made me think that either of them could easily leave a surprise glory hole for the other just as a function of how their bodies do. Gotta keep things fresh in marriage ya kno yuk yuk yuk
Can I tell you a secret? When I first started shipping frobin I thought Robin's entire attraction to Franky was because he is freaked out and easily customizable, and she can make her body parts (ANY part) appear out of thin air wherever tf she wants. Surely these two enthusiastically weird people are having sex in strange and unusual ways. Surely, right?
Anyways I agree they're doing it non-euclidian style. Pocket glory hole ftw. Dunno what I said to bring that thought, but just know that you're right.