Blows dead bears 

It doesn't matter how hard you try or how good you are at doing it, the bear is dead, so nothing's going to happen.

We tried our best but lost to a superior team. That blows dead bears dude!

Blows dead bears by Spiderwilliams March 2, 2022

that blows dead bears 

when something sucks so far beyond normal. after all, what could suck worse than blowing a dead bear? Not much. Used in Western Canada and parts of Ontario.

"Heard you got busted at the border for pot. that really blows dead bears,eh?"

that blows dead bears by Jamie Packham March 7, 2005