The thickness of a guy’s hairy armpits are mostly determined by genetics. This is why some guys are blessed with really hairy armpits while others are not that hairy. I really like it when a guy’s armpits are like this. It’s really thick and dense. You can’t see his skin under all that hair. That’s cool with me because the hairy and thicker they are, the better smelling they are. Guys that are like this usually sweat more too since it’s pure bush down there. That just gives me way more to enjoy. WOOF!