[NSFW] Question about insecurity during your childhood's sexual development. [Details inside].

In my answer to a question, earlier today, I spoke about feeling awkward about one’s sexual(ity) (development) and/or behaviour/thoughts about one’s own sexuality.
My question: Did you have any ‘weird’ or awkward thoughts or behaviourisms that later turned out to be quite ‘normal’ that made you feel stand out from the rest of the world (simply because you were not knowledgeable on the whole subject of sexuality)?
I, for example, thought that a man’s penis should be erect in a completely horizontal position, because that would be the only possibility to enter the woman (who’s entry was according to me not down, but in the front, in her belly, under the belly button).
All this because I had seen a male and female couple of wooden figures, of which the male had a little horizontal stick for a penis, and the female a little hole, exactly opposite the man’s organ…
Needless to say that this wooden guy’s thing didn’t match at all with my (erect) thingy.
Got any yourself?

Thanks in advance to those that answer this personal question!