An egg vent... Aoba isn't sure how that even works, but it's fine; it's not like he considers that a part of whatever-it-is-they're doing, even if he probably should. But since eggs aren't a part of sexual activity for him, he just sort of files away the information as 'fun, but not currently relevant'. He'll remember it eventually and think about the implications some more at that point, no doubt, but not here and now.

"No, it's... It's fine, if it wants to -... If you want to." Want to what, exactly?! Touching, for one; more touching wouldn't be so bad, either.

"It's so big..." He can barely imagine that kind of thing fitting inside anywhere, even with the tip rather slender. But then, should he be thinking about it going in anywhere at all? Maybe he's pushing it, just a bit?

He's... really, really horny, though, and he turns his hand to keep stroking that coil, without trying to free himself.