Oh my god.
Johnny drinks Pisswasser, before tossing it at the ground, shattering it.
That's at the end of the mission "It's War", when Billy shares the news of Jason's demise.
Johnny meets Stubbs barely a handful of missions afterwards and had his british accent moment with Leavis.
Don't you see where I'm getting at?
Trevor too meets Nigel and Mrs Thornhill barely a handful of missions after throwing the bottle of pisswasser at Johnny, and spurs out-of-nowhere british accents!
Drinking Pisswasser gives you 'british accent hiccups'!!
It's scientifically examined and proven!
Toss it on the ground/alternatively on someone's face
Find british people to hang out with, and wait for the opportune moment
Open your mouth and observe out-of-character moments explode in all sort manners of subtleties!
I hope they include pisswasser as a new type of grenade category weapon in the DLC.
Select it, drink it, toss it, wait, shoots off a lorry missile strike from outer space!