UK slang. Meaning "Are you kidding me?" Or are you serious?" Or "you have got to be joking right?"
"There's a spider on your leg."
"Are you taking a piss?"
by AppJaxx July 12, 2015
Get the taking a piss? mug.
To be essentially fucking with someone or to be condescending to someone by implying that they are stupid.

Refers to when someone says "Don't piss in my pocket and tell me its raining, jerky..."
Tom: "Thanks for the CD, I like rap music.."
Sue: "Are you taking a piss?"
Tom: "No, not at all. I really do like this CD. Thanks
a bunch...really."
by Christophe Graham July 6, 2006
Get the taking a piss mug.
If your taking the piss it means you are being sarcastic about something but in a serious tone of voice
Friend 1: God look in the mirror ugly

Friend 2: Whatttt?? ;(

Friend 1: Haha, only joking. I'm just taking the piss ;)
by EbbyMc_03 May 16, 2016
Get the Taking the Piss mug.
When you shoot yellow warm liquid out of your dick
John: Yo man what ya doing?
Me: Oh me? I'm shooting yellow liquid out of my dick

John: Oh u mean taking a piss?

Me: What?
by dicks yellow September 12, 2018
Get the Taking a piss mug.
Making fun of someone, without intending to cause serious offence. Also known as 'pulling the piss'.
Ted: You suck at life.
Jimmy: Screw you!
Ted: Relax, I was just taking the piss.
by Gwai March 22, 2006
Get the taking the piss mug.
To take this piss out of something; the tease, joke or make fun of someone or something.
Hah...you're really taking the piss out of him!
by big man steve July 30, 2018
Get the taking the piss mug.
To make someone who's trying to seem important less important. Derives from the piss-boner men wake up with in the morning, it's a fake boner. If you took the piss away, there would be no boner. Do you see?

That's the original meaning, however taking the piss now means just giving someone a ribbing and in the most part not meaning to be malicious.
Original meaning:

Guy 1: "Hey guys, what do you think to my awesome new haircut?"

Guy 2: "I think you look like a fucking prick, mate...you look like a real slob".

Other guys: "Haha, Guy 2 really took the piss out of guy 1!"

Meaning as it is now:

Guy 1: "Man, I only got a 45 on my last assignment"

Guy 2: "Haha that's fucking shit!"

Guy 1: "Don't be so mean"

Guy 2: "Cheer up man, I was only taking the piss"
by L-Shizzle November 16, 2007
Get the Taking the piss mug.