Let me run thr9ugh the 6ullet p9ints 9n human sexual educati9n, f9r the 6enefit 9f s9me9ne 9n my dash69ard wh9 seems s9rely unaware.
F9r the sake 9f this exercise, I'll refer t9 human 69dy parts 6y their tr9ll equivalents, where applica6le, as the differences are minimal en9ugh t9 ign9re f9r the time-6eing.
Human 6i9l9gical females have 9ne (1) n99k, and 9ne (1) clit9ris.
Human 6i9l9gical males have 9ne (1) 6ulge.
Human 6i9l9gical females d9 n9t have 6ulges. The clit9ris functi9ns as a much smaller (generally smaller than a mar6le) '6ulge' -- a sensitive sp9t and imp9rtant er9gen9us z9ne -- 6ut it is n9t suita6le f9r penetrati9n.
Human 6i9l9gical males d9 n9t have n99ks, 9nly waste chutes. The waste chute can 6e used in place 9f a n99k, 6ut it is n9t the same 9rifice.
This sh9uldn't need t9 6e said, 6ut 6i9l9gical females als9 have waste chutes, and they can 6e used f9r that same purp9se as well.
Humans d9 n9t have 69ne sheaths; their 6ulges remain '9ut' even if unar9used, as it is their natural state. They are still sensitive, and admittedly rather p99rly pr9tected, 6i9l9gically speaking. If a visual reference is required f9r human 6ulges, I w9uld suggest y9u l99k 9ne up 9n y9ur 9wn.
Humans d9 n9t have any 'special p9wers' rev9lving ar9und their genitalia, 9r the use there9f, 9r their sexualities, regardless 9f whatever ficti9n y9u may read, and h9wever many 6u66lr p9sts will attempt t9 tell y9u that s9me humans are in fact drag9ns, 9r fairies, 9r mermaids, 9r whatever else. They are n9t.
Let me state that again, just in case: Humans are n9t drag9ns.
Humans are mammals, meaning they 6irth and nurse live y9ung -- generally 9ne infant per 6irth, 6ut s9metimes tw9 9r three. Num6ers as high as eight have 6een rec9rded, t9 my kn9wledge, 6ut these cases are extremely rare, and unlikely 9r even imp9ssi6le with9ut scientific interventi9n.
6i9l9gical females 6irth and pr9duce milk (th9ugh n9t always). 6i9l9gical males d9 n9t, th9ugh they still have nipples. (The twin 'dark sp9ts' 9n their chests.)
F9r a 6i9l9gical female t9 have a child, they must have sex with a 6i9l9gical male. If c9ncepti9n is successful and all g9es well, a 6a6y will 6e 69rn in nine m9nths.
C9ntraceptives exist t9 all9w a 6i9l9gical male and a 6i9l9gical female t9 have sex with9ut 6earing a child.
In s9me human cultures, pailing practices 6etween mem6ers 9f the same sex 9r gender are c9nsidered unc9mm9n, even ta699 -- generally 6ecause a child cann9t 6e pr9duced fr9m the relati9nship. This is n9t t9 say that it d9es n9t happen, 6ut the 'stigma' 9f it features heavily in their culture, and there6y in their creative w9rks.
Humans wh9 d9 n9t live with tr9lls, 9r have n9t c9me int9 c9ntact with tr9lls, rarely 96serve quadrants. The c9mm9n c9nsensus is that a human's r9mantic interest (9r interests, in the case 9f a p9lyam9r9us relati9nship) will 6e a c9m6inati9n 9f matesprit and m9irail 69th.
Humans d9 n9t 9ften have cultures that require use 9f the 6lack 9r grey quadrants.
If I've missed anything, 9r if any 9f this is unclear, let me kn9w.
It is really very simple.