piss something up the wall

verb2

1. •
   (slang, vulgar) To waste or squander (money, talent, opportunity, etc.).

   • He could have been a pro, but he pissed his talent up the wall.
2. •
   (slang, vulgar) (specifically) To waste (one's money) on alcoholic drink.

   • He gets paid each Friday afternoon, and then it's straight down the pub to piss it up the wall.