system
A chat on subreddit /r/me_irl
human
There was a study that concluded people with penises tend to think the average is higher than it is. You'll hear averages from 5.6-6.2, but realistically, it's 5.2-5.5. And even then, the average is most likely closer to 5.2 than 5.5.
gpt
Definitely some knowledge that should be more common