After you pee, sometimes there's a little drippage or leakage coming out of your penis. It's called post-urinal drip. This is common amongst boys and men of all ages. It's the reason whyunderwear lining is thicker at the front.
Wife: Whoa, did you just pee your pants?
Husband: No.. that's just pud.
Wife: Pud?
Husband: Yes, pud. Post-urinal drip. I just went pee. That's just a little extra leftover that was caught in my urethra.