A childhood belief about oral sex

i knew about sex and how things like that worked but i never knew what oral sex was.
i used to think that a blow job was where a woman blows down a mans penis to inflate it (like one of them long balloons you use for balloon modeling) and make it hard so they could have sex properly.
and to give a woman oral sex it was like a blow job but blowing in a womans "baby hole" so when the baby was made, it had plenty of room