Pronounced "oo-der'hay". Uderhai is used much like the expression oi vei. Used to express anger, tiredness and sometimes sadness.
(1) Uderhai! I can't believe they've raised fucking gas prices again.
(2) Uderhai, I can't be bothered to go to the gym tonight, I had to work an extra 3 hours!
(3) Oh uderhai, I can't believe he had a heart attack.