It can be a post in this subreddit or a video on youtube that really shocked you and opened your eyes to the real female nature and also which taught you the most valuable lesson.

Mine personally was when i found AMS and his video "The most realest video i ever made" was the most valuable for me and the most shocking thing was when i found out the first time i was reading sidebar that no women will ever love me like i love her, that they are basically children and well female nature in general.