Imagine getting blown by a beak. Them things is sharp, they are pointy, I believe made out of keratin so they are also stiff and uninviting. WAIT A FUCKING MINUTE HOW DO YOU GET YOUR DICK SUCKED WHEN SHE DON'T EVEN GOT LIPS!?!?!
the artist works from the premise that beaks soften in a world where animals evolve to be humanoid; so they work like cartilige lips and that's why she also has teeth. It's a little silly but at least it explains how they can make sounds to talk lol