Fantastic Arousal: As I may have mentioned before, not everyone keeps their genitalia in the same place, and likewise, not everyone keeps their erogenous zones in the same place. (Or even in the same plane of reality. Like, say, AIs with unusual cognitive maps whose erogenous “zones” include things like n-dimensional geometric figures, but only if they include ratios of Mersenne primes.)
There is also the matter that they aren’t all sensitive to the same things, too. For example, those engaging in interspecies relationships with the kaeth, whose thick, multilayered skin contains an awful lot of metal – especially where the dorsal plates are concerned – and are not themselves members of remarkably kinesthetic species may well be advised to bring some power tools to the bedroom.
And, um… use protection.