I think instead of drawing the characters engaging in foreplay the authors imagine men getting wet like women just to save time . In reality that man's ass would have been ripped immediately but this is obviously fictional so who cares
That's mainly aimed towards mpreg. But this bl isn't omegaverse or mpreg... Dr.Brat
So pretty much for men to function like women without being women, just like you point out in your original comment, and to be fair I agree with you, BL authors seems to have weird ideas about anatomy and body functions in general
I think instead of drawing the characters engaging in foreplay the authors imagine men getting wet like women just to save time . In reality that man's ass would have been ripped immediately but this is obviously fictional so who cares