LOL!!! Any time my husband made such a faux pas when my daughter was a tot, he'd always push it off on me to explain. Like the time when she was about three and he brought her out shopping with him and had to take her in the men's room to use the potty. Of course there was a dude at the urinal and it was the first time she'd ever seen 'one'. She demanded to know why the man's 'wee wee' looked like that and if all boys had ones like that, to which my darling hubby claimed "Daddy's know almost everything about everything, except for that, only mommy's know about that".