Meaning of piss something up the wall | Babel Free

Definitions

1. To waste or squander (money, talent, opportunity, etc.).
   slang, vulgar
2. (specifically) To waste (one's money) on alcoholic drink.
   slang, vulgar

Examples

“He could have been a pro, but he pissed his talent up the wall.”

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

CEFR level