Thank you everyone for sharing these stories. I've not laughed this much in ages...it felt good.

I have a 3 yr old dcg. When I am changing her little brother aged 17 months she always comes over and peers over him saying the usual "boys have penis' and girls have bums" All of them say it and as we all know it is a phase of normal curiosity. So a couple of weeks ago she does her usual moment of observation but says"awwww look at my brothers cute little penis" LOLOL it didn't stop there though. She straight away looked at me and say " **** has a little penis but my dad has a HUGE penis" She literally screamed the word huge and it was all with complete innocence as I was unable to contain my laughter and was literally rolling around on the floor. I told her mum at pick up who thought it was hillarious but the next morning she told me that once she had told her husband that he was totally mortified HAHAHAHA