Parking on the freeway
The last little bit of urine you can't shake out or squeeze out, until you've got your pants on then it releases to leave a wet patch upon your trousers.
*Bob goes to toilet*
*Bob returns with small circular wet patch in the groin area on trousers*
Steve: "Bobs got parking on the freeway"
*Bob returns with small circular wet patch in the groin area on trousers*
Steve: "Bobs got parking on the freeway"