My thoughts on the age old debate about Neferpitou's gender. Light spoilers for the chimera ant arc.

I think Pitou is referred to as a male despite having female anatomy and / or feminine traits because the colony only had one considered to be female, the queen and all other ants are considered male.

The way I understand it, the queen would eat a creature and her progeny would inherit the traits of the things she ate. If she only ate male humans then all her offspring would look masculine and also be referred to as male. If she ate only female humans then her offspring would appear feminine and have female anatomy but still be referred to as male because gender is more subjective in the chimera ant colony. 

Pitou definitely inherited more visible feminine traits than masculine traits and I'd imagine Pitou would also have female anatomy, partially supported by the fact he had visible breasts. Pitou's gender identity is male because he is not the queen but his sex is female, at least the way I see it.

In conclusion, wanting to fuck the cat drawing isn't gay because Pitou is biologically female and if Pitou was biologically male he'd still be a femboy so it's a win/win situation.

**TL;DR: I think Pitou is anatomically female but his gender identity is male because all offspring of the queen are considered male even though their anatomy may suggest otherwise.**