Term invented at Reading festival 1998. Refers to when a gentleman fails to shake excess urine from his penis, instead putting his manhood back into his pants. As a result, urine dribbles through the pants onto the trousers in a circular/bead-like shape. Most noticeable on chino-style trousers.
The act of urinating in complete darkness while in a bathroom, attempting to locate the toilet or disregarding it completely.
The next time your in the mall, picking up your dad from jail, or at loved one's home enter the bathroom and shut off the lights. Unzip and let it go. That's a mystery piss! You did it!
I took a mystery piss in the RCC bathroom today. The janitor is gonna be so pissed!
"Piss" is a term long used in the UK and more recently in Australia for (generally weak) alcoholic beverages. Pissing the night away is an idiom that means drinking alcoholic beverages all night. It has nothing to do with urinating, as one would assume in the United States.
Young finnish teenager girl or boy. Use much time and money to keep her(him)self looking cool. Uses character "z" instead "s" drinks lot of sweet cider. Wear too tight trouser which leave hips visible