Taking a piss off the Hollywood sign 

Taking a piss off the Hollywood sign either is protesting the perfection wanted of people or physically urinating off said sign.

Man:”I went and got a drink.”
Man 2: “Oh no.”
Man: “Yeah I ended up Taking a piss off the Hollywood sign.”
Man 2: “Protesting?”
Man: “No... literally.”

Taking a piss off the Hollywood sign by Actually It Is *insert thing* September 17, 2019

You're taking a piss 

Phrase used when expressing shock or confusion, as if saying "you're lying!" or "you can't be serious" or "i don't believe you!" in a positive way.

A: "i just got engaged!"
B: "stop! you're taking a piss!"

or

A: "i just got robbed"
B:"you're taking a damn piss, when did this happen??"

You're taking a piss by Ru_ox May 14, 2023

taking my arse for a piss 

Explosive, liquid diarrhea.

Example
Vince: "You've been in there for a while!"
Nelson: "Heavy night last night, just taking my arse for a piss!"
Vince: "I'll avoid trap two"

taking my arse for a piss by ShitDemon January 8, 2015