Slangs beginning with J :
Jab : (UK) A jab is an injection, both medical and non-medical.
Jabber : If someone jabbers, they talk a lot but don't make any sense, usually because they are excited, scared, etc.
Jack : To jack is to steal. (from Hijack)
Jack : (USA) Jack is money.
Jacked : If something is jacked, it is stolen. (It comes from 'hijacked'.)
Jacko : A jacko is a slang term for a paedophile (pedophile)- someone who molests children sexually.
Jackson : (USA) A Jackson is a twenty dollar bill.
Jammy : (UK) Someone who is jammy is very lucky, especially when their luck is undeserved.
Jawache :(UK) To jawache is to kiss someone.
Joanie : (USA) If something is Joanie, it's old-fashioned.
Job : (UK) A job is a crime.
Jobsworth : (UK) A jobsworth is an annoying official who sticks to rules no matter how petty or trivial they are. (It comes from 'more than my job's worth', which means they think any deviation would place their job at risk.)
Jock : (USA) A jock is an athlete, especially in colleges or universities.
John : (USA) The john is the bathroom or toilet.
Johnson : (USA) This is a term for the penis.
Joint : 'Joint' is a term for a cannabis cigarette.
Jordan : (USA) A jordan is an attractive male.
Jugs : Jugs are a woman's breasts, especially if they are large.
Juk : (UK) To juk someone is to stab them.
Jumper : (UK) A jumper is a thief who steals from offices.
Junkie : A junkie is a heroin addict, though the term is often used for drug addiction.
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