Irish slang meaning to succeed brilliantly or to do exceptionally well — implying you're so powerful and capable you could run on diesel fuel. The phrase has a rough-and-ready, working-class energy to it, suggesting not just success but a certain hardy competence. Used both as a declaration of personal triumph and to compliment someone else's achievements, it captures the irreverent, colourful way Irish English turns everyday imagery into vivid expression.
After landing the contract the whole team had been chasing for months, she really started to suck diesel.
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(Ireland, slang) To succeed; to do well.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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