(Bro-Nadz) - The part of the male lower anatomy that produces the hormones which allow him to overcome feminine persuasions that would keep him from hanging out with his "bros". See also "Balls"
When a guy meets a new chick and he starts regularly ditching his bros to hang out with her, he has lost his bronads or they have become non-functional.
"Dave never comes and hangs out anymore. His girlfriend totally has his bronads in her pocket."
"Hey, Ian. I'm going to write you a prescription for a pair of new bronads. Come by and hang out once you get that filled."