The art teacher gave my son a paper with two circles on it and asked everyone to make a basic picture with simple lines.
My son is 7. He drew a penis.
They sent a note home with the picture. I mean hes at the age where fart and poop jokes are the funniest shit he's ever heard. The circles are pretty much side by side. I prolly would have drawn a penis too...lol.
Maybe thats where he gets it.
Ds claims that two other boys did the same. Idk if thats true but it wouldn't surprise me!