In India, sex education is laughably absent, so even the term itself is little alien to us. In other parts of the world however, there are actual sex ed teachers who explain the tubes and the testes and intricacies of baby making to young minds. Considering the world's widespread ignorance about coitus, some really wild questions get thrown up, and one Reddit thread documented that.
Can you really blame them though? We all had some weird questions about sex at that age.