Im reading fanfic rn and for some reason 3 in a row involved either Ruby or Yang bringing up who gave them "the talk" and most of them have Yang giving Ruby the talk but honestly i see it going down like this: Tai doesnt want to do it and asks Qrow to but Qrow says no so Tai tries and it goes badly so he asks one of their female neighbors and she gives the puberty talk and then later on in school health class covers the sex talk and STDs and he thinks the girls know all they need to know but somewhere along the trip across Anima Qrow finds out that Tai left the things out he thought was obvious and Qrow knows he needs to intervine before the newly dating orphans Nora and Ren do something stupid so Qrow has to give the talk and this time around is the first time Yang and Ruby find out their dad was in a polyam relationship with both of their moms and nobody ever brought it up to them bc they thought they knew