Whats the Deal with Boners? - Cosmopolitan
Dec 5, 2013 ... Im glad this was asked, because it never hurts to start with the basics and it
doesnt get more basic than this. A boner, or erection, occurs when blood flow to
the penis is increased, causing it to become hard and engorged. ... So much
blood goes into my boners that I definitely get stupider when I get one!