Urine put off as beer or possibly beer mixed with urine. It is a reoccurent theme in Quentin Tarantino movies.
Tarantino: "What kind of beer do you have?"
Bartender: "Warm Chango."
Tarantino: "Great, that's my brand."
Takes a sip
"It tastes like piss."
Bartender: "That's because it is."