as useless as tits on a bull
as useless as tits on a bull
vulgar slang Utterly ineffectual or unnecessary. Primarily heard in Australia. This umbrella is stuck inside out, so it's about as useless as tits on a bull. I know next to nothing about computers, so I'd be as useless as tits on a bull trying to figure out what's wrong with your laptop.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.