The sales clerk is 'pissing' us 'around' [=('US') 'jerking us around']—he keeps saying he'll help us, but we've been waiting for 20 minutes!
He says he has to 'take a piss'. = ('Brit') He says he has to 'have a piss'.
It's time we stopped 'pissing about' [='fooling around'] and got busy.
(..) This war is far from over. Could I have one? A lemon one...or any of them. Three coppers. - How about a nice fat pigeon? - Oh, piss off now. Go on. Do you have any stale ones from yesterday? Or any burnt ones? Piss off! Hey, where's everyone going? What's happening? (..)2011 TvShow: Game of Thrones Title: Baelor Season: 1 Episode 9
(..) - At what? - The sword! Show us the sword. Sword! Sword! Sword! Sword! Sword! Sword! Sword! Sword! Sword! - Let's have a look. - Piss off. Come on, I want to have a look at it in the light. Give it here! What is it? - I... (..)2011 TvShow: Game of Thrones Title: Baelor Season: 1 Episode 9