My oldest was a real hoot when it came to breasts. When he was just an infant, he had a habit whenever any girl was holding him. If the girl stopped paying enough attention on him, he’d pull out her shirt top and peer down it.

We have a friend who actually wears F cups (unfortunately this is due to general overweightness, not an epic chest). When my son would be held by her, he would always sigh and go to sleep resting against them. We started calling her “Mattress”.