Johnny Knoxville told the crew about how he tore his urethra during a stunt, explaining how he has to flush it twice daily by sticking a tube into his penis - all the way up to his bladder (only 10 – 11 inches).
Johnny claimed the process prevented scar tissue from constricting: "In the beginning it was [difficult]...it's not that bad anymore. I've gotten used to something horrible."
Howard was appropriately shocked, and Johnny sympathized: "It's not cool...I'm just like, "Ok, this is a consequence.'"
Johnny added that breaking his arm or leg never phased him, but breaking his penis got his attention.