Most people who live in Longford are too fucking lazy to shower and therefore have a shitload of dandruff in their mushroom shaped haircut.
The water will give you a disease unless you filter it with many separate filters.
Scott: "What the fuck is that on Jack's back?"
Trav: "I dunno, let's ask him. OI JACK! wtf is that on ur back/shoulders?"
Jack: "Urghh my brother put a tissue in the washing machine?"
Scott: "You dont own a fucking washing machine you derro."
Trav: "Dandruff-boy says what?"
Jack: "What? It's a Longford Tradition!"