as useless as an ashtray on a motorbike

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as useless as an ashtray on a motorbike

Utterly ineffectual, worthless, or unnecessary. Primarily heard in Australia. This umbrella is stuck inside out, so it's about as useless as an ashtray on a motorbike. I'm as useless as an ashtray on a motorbike when it comes to figuring out computer problems.
See also: an, ashtray, motorbike, on, useless
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
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