It basically is... Post Urinal Drip!
PUD, is when one uses the urinal and has finished his business he may experience some post urinal drip. In which case he achieves slighty moist underwear unless his penis is first wiped on a piece of lavatory paper.
Post urinal drip.
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 why underwear lining is thicker at the front.
Wife: Whoa, did you just pee your pants?
Husband: No.. that's just pud.
Husband: Yes, pud. Post-urinal drip. I just went pee. That's just a little extra leftover that was caught in my urethra.
The annoying extra little bit of urine men can never seem to get out of their penis after peeing no matter how many times they shake, until they place their penis back in their pants.
No, I didn't drip water from washing my hands, that is just post-urinal drip
Post-urinal drip. The urine that lands in your underwear after you shake your dick at the stalls.
"Hey dude, your pants are wet"
"Oh, damnit! I hate p.u.d."
Post-Penile-Drip: When peeing at a urinal has finished, the man will then "tuck" himself back into his pants. When the first step away has commenced, an extra amount of pee will drip out. Hopefully this amount is not too much as to show through the man's pants causing much public embarassment. If he is lucky there will only be a temporary damp feeling. The only way to resolve the problem is to "shake" yourself dry or hope they have electric hand dryers.
Girl #1: Hey, you got spots on your pants...
Guy #1: Ahh dammit! I have PPD, I mean I splashed water at the sink...