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.
(..) so I can tell you my plans for this great house now that winter has come. But first, a toast! No more of that Dornish horse piss! This is the finest Arbor gold! Proper wine for proper heroes! Stand together! Stand together! Not you. (..)2017 TvShow: Game of Thrones Title: Dragonstone Season: 7 Episode 1