Women want to look at your bulge?

So today I was at the bus stop , I was alone and leaning against the wall just browsing.
Soon this short black woman comes from my right side and when she starts getting close to me I just see her turn her head towards me , more specifically my pants , I had sunglasses and my phone in front of me so she probably didn't know I was watching her.
She even had this little smile on her face, after she totally passed I looked down to see if I had my pants stained or something when I see my dick is hard and making a bulge towards my right leg.
I wasn't looking at porn but I assume it was because of the particularly tight boxers I had under my shorts and the pressure made it excited.
Since there was nothing I could do about it I ignored it.
A few minutes later the same thing happened another woman had her head straight until she passed near me where she turned her towards my pants like not even trying to hide it.
After that I took of my sun glasses and noticed that the following women didnt turn their head to watch my bulge.
So maybe the first ones had a good look at it because with my sunglasses and phone they thought I wasn't paying attention to them so they were safe to take a peek?
It was an interesting random experiment while I waited for the bus , my theory is that yes, if they don't know you are watching them they will take a good look at it.