Backwards for "boy-boy". Usually reserved for cute little boy dogs
Here yob-yob. Look how cute boy-boy is!

Or move your finger up and down and say "Yob-yob" like "Redrum" from the Shining.
by SamIAm13 May 2, 2010
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The antithesis of what a good boy should be - rude, obnoxious, violent and stupid. Formed by spelling 'boy' bacwards, it was coined in England in the 18th century as it was very popular amongst upperclasses to speak backwards at the time.
Have you seen that boy? He's a yob
by guido January 23, 2004
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yob; noun
(britishinformal)

someone, especially a young person, who is rude, noisy, and sometimes violent
"did you hear about that girl caitlin?"

"yeah she's such a yob."
by bonbonbeanbag May 1, 2019
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Sid Vicious was a yob...but, you know, people change...they get older, wiser...they mature...Sid's no longer a yob; he's dead.
by harry flashman July 13, 2003
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Yobs:

Primarily British slang

Delinquent teenagers with their hoods up (as defined by the Tory party).
Those little bastard yobs broke into my car.
by automomous March 19, 2007
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Everybody hates him for his past job. He was a real yob !
by TKESHO March 20, 2009
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"Yobbo or yob is a slang term for an uncouth or thuggish working-class person. The word derives from a back slang reading of the word "boy" (boy or boyo reversed becomes yob or – slightly modified – yobbo)."

Definition borrowed from Wikipedia.

Mentioned in British Civilization: An Introduction by John Oakland (p.13).
"A Times Travel study of mainstream tour operators ' youth brochures has revealed a widespread acceptance of yobbish behaviour."
TIMES, SUNDAY TIMES (2002)
by thehalflingqueen September 9, 2013
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