What are guys thinking when they’re checking you out?

I started working as a server and noticed several guys just looking at my chest while I’m walking around doing stuff. I was kind of surprised because I have small boobs (Bs) and I’m covered from my neck and down. I’m usually in a tight (ish) black turtleneck and black pants. Is it just a thoughtless reaction due to detecting movement or is there a whole imagination or are y’all just zoning out while talking? I don't know

What are guys thinking when they’re checking you out?
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