system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What makes people get horny?
gpt
Guys: An attractive female, or thoughts of one, or the idea that there may be one nearby or on TV, or simply the idea that an attractive female exists.

Girls: The world may never know.  There are rumors of rare specimens that experience arousal and desire on a regular basis, but none have ever been proven to exist.  There are rumors, much like those surrounding the loch ness monster, bigfoot, and the abominable snowman.  But all we have to go on are fuzzy stories and half remembered tales of "that one crazy girl from college."