I durring a family game of cards against humanity I along with several other people discovered that my uncle didn't know what a clitoris was. After a brief discussion it became clear that he knew what and where it was, he had just never heard the word clitoris.

I'm willing to bet that a lot of people just dont know the terminology. If you asked them what the epididymus was I'm sure you'd get the same reaction. People, especially older people, are just very poorly educated on genital anatomy.

As far as guys who ignore the clit durring sex, I'm 99% sure that's just because they don't want to put any effort into their parteners pleasure and "not finding the clit" is an easy excuse. Like, "Sorry lady, I can't make you cum, but it's not my fault that vaginas are weird and confusing for my aerodynamic brain."