blue blazes (uncountable)
- (informal) Elaboration or intensification of 'blazes', a euphemism for 'hell'.
1932, Delos W. Lovelace, King Kong, published 1965, page 40:
‘I’m fit to be tied right now. I’d like to throw my cap up into the air and yell Blue Blazes.’
- What the blue blazes are you talking about?
- How in blue blazes am I supposed to do that?
- It's hot as blue blazes today.