Jumalauta; originally had the meaning "God, help." (Jumala, auta.) but has then turned into a curse word. Rather weak effect, used commonly. Fits practically in any sentence, usually as the first word. The same word in english would be maybe "God dammit!"
Jumalauta ettekö te osaa tehä mitään oikein?! (God dammit, can't you do anything right?!)