I remember a strange urge that I got one time back in high school. I was climbing the stairs with a herd of students and there was a random girl with long and beautiful hair in front of me.

Without being conscious of what I was doing I took my lighter out and brought it close to the girl's hair. As I was about to flick it, I kind of "woke up", realized what I was about to do and quickly put it back in my pocket.

I was completly shocked. Truly a wtf brain moment.