Penis owners can absolutely get UTIs, but since the urethra is much longer, they’re less likely to develop into bladder infections.

Idk I feel like most dads would accept “I didn’t tell you because I was afraid it would change our relationship, when I really love what we have now and don’t want to lose it, and when no matter what the genes say, I’ll always think of you and love you as my dad” as a valid excuse.