If you're Black and prostate cancer runs in your family, well, that's a lottery ticket nobody wants. Tom Farrington was holding one, and he's made it his mission ever since to educate Black men about their elevated risk for getting the disease. Tom talks to Mark about losing his father and both grandfathers to it. Mark also introduces us to Bill Tinney, whose impotence following a prostatectomy turned him into an evangelist for penile implants. For more, visit bostonglobe.com/prostate. Email us at prostate@globe.com.