Well they have wings right? So what if it ´ s possible that they have sky giants? Birth honestly doesnt make much sense in one piece for example, charlotte linlin is huge, how did her mother give birth to her? Well my theory is that one of the sky people fell in love with a warrior of elbaf then making a behemoth, the behemoth possibly had a sibling or something like that.

How would that even work. The mother can't be the sky person because the baby is too big, and if the mom was the giant then the sky person would have difficulties doing 'the thing' to the giant

Isn‘t Edward Weevil already confirmed to be the son of Stussy and Whitebeard? Physics don‘t really seem to make sense in that regard.

Wait stussy the CP-0 agent from reverie?

You‘re not caught up, are you?

Nah the old stussy not the clone

Also yeah how could they make a baby??

COMMANDERLINUS THINK ABOUT BIG MOM, SHE´S BIGGER THAN HER MOM. LETS ALL ADMIT BIRTH STRAIT OUT DOESNT MAKE SENSE IN ONE PIECE.