Crotch watch

I read a post on Facebook a little while ago about one of people's big obsessions: boobies.  I say people because it listed as one of the facts about them that EVERYONE looks at them, men just look longer than women do.  I was a little surprised.  Both that women look at them and I was also surprised at the effect of reading that factoid drew my attention to the fact that I do too and how long I look at them and when I don't look at them.  

Some of the things that I noticed was that variety that they come in and my reactions to them.  Everything from my internal monolog telling the me that person A needs to wear a bra with that mesh top.  Also there was a woman who was heading down the road of severe back issues from the pair that she was carrying, literally twice the size of her head, each.  

What I also noticed was when I did not look.  I did not look when the woman I question made eye contact. I also did not look when it was a person I knew.  

I wonder if people watch other parts too.  Do people watch men's crotches?