A race of robots where the “A” gender’s genitals are a barely sub-critical chunk of uranium, while the “B” gender has a control rod.
A cloned dystopia where viable genetic material is used to vote for and then create hybrid representatives.
A retired cyborg-warrior race whose penii still fire armor piercing ammunition due to a workplace sexual harassment loophole in the decommissioning process.
A misspelling of the fundamental laws of physics causes colliding hardons to disintegrate in showers of high energy particles.
Increased solar UV radiation causes women to grow unprecedented Tanner X pubic hair, a highly flammable substance ignited by rubbing against another such thatch.
Sorry, just trying to think of a situation where it’s ever even remotely the government’s business who people have sex with.