Being a scientist who wants to know everything came with having to know biology, that meant turtle anatomy, and human anatomy, the two things Donnie mainly prioritized when it came to this subject. But when biology came around in class in high school, Donnie was confused around the... female anatomy. Specifically, periods.

For some reason, you were the person he asked this about.

"So..."

He started at lunch when it was just you and him sat under a tree on a grassy area of the outside grounds.

"Obviously a female turtles anatomy is different to a female humans so... how exactly does the period work?... or happen?"

He questioned, seemingly nervous to ask as if he were slightly embarrassed about it all.