Serbian Sikteruša/sikter kafaBadly prepared coffee.

There's a story that, back in the day, if the housewife gave guests bad coffee, it was a subtle sign that they overstayed their welcome and should leave. Nowadays it remained as a name for any badly prepared coffee, primarily the "mud water" variety. It comes from the Turkish loanword "sikter", meaning "get lost" or "go away", so sikter kafa is "go away" coffee.