opening up a can of whoop ass 

To unleash fury and anger, in the form of whooping ass

When Tom found out his friend Bill was nailing his girl, he solved the issue by opening up a can of whoop ass on Bill.

opening up a can of whoop ass by EatingTacosRightNow April 13, 2016

Jerry-Rigged Can Of WHOOP-ASS 

A smiley non fungible apparatus used for whoopin ass.

I really opened up a Jerry-Rigged Can Of WHOOP-ASS on marvy marv's smiley chub.

Jerry-Rigged Can Of WHOOP-ASS by Mathew's alt May 21, 2022

Opening a can of whoop ass

When a female puts a full can of beer in her butt

She loves opening a can of whoop ass with my last beer

Opening a can of whoop ass by Nyrac July 22, 2023

Can of Ass Whoop 

The thing i'mma pull out on you, mothafucka

I told that bitch that I was gonna pull out a can of ass whoop on him if he didnt shut up.

Can of Ass Whoop by The_Mothafuckin_Man January 3, 2009

Can of woop ass 

When someone will kick someones ass.

Neil: Greg why are you so fat,
Greg: Want me to open up a can of woop ass on you???

Can of woop ass by Killku November 23, 2006

Can of whop-ass 

A typical shelf-stable can of whop-ass, a substance known to obliterate those who oppose it.

"I'm gonna open up a can of whop-ass on you!

Can of whop-ass by JackofJacks November 29, 2022

a can of whoopass 

A phrase used to indicate that the target is about to be introduced to a whole world of pain. Specifically, you, by opening this can, are going to unleash the power of whooping (that is, in the sense of attacking and beating, not in the sense of whooping cough) upon their sorry ass.

1. Specific use:
Jerry paused in thought.
"For what you have said about my mother, my girlfriend, and the proud ancestry of my forebears," he announced, "I have every intention of opening a can of whoopass."

2. General form:
"If <offending body> continues with <offending action>, it is totally time to open a can of whoopass"

a can of whoopass by Ben Graham October 12, 2005