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2.
All alone
I was sat there on my Jack Jones, like a right billy no mates
by pony June 16, 2003
 
1.
Cockney Rhyming slang for saying that you are on your own.
"Who are you with?"

"I'm on my Jack Jones man - nuttin' going on."
by alarm clock May 28, 2004
 
3.
See also
on my tod
I was sitting there on my tod
by Debs August 08, 2003