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2.
Dibbly a shortened phrase for dibbly dikey meaning pikey. Also used to refer to low income scum, council estate families, chavs, gypo's and general scum.
Sovereign ring? Caravan? Are you fucking dibbly or summit?
by Dibbly Dave June 13, 2009
 
1.
A person of low intelligence, ability, or aptitude. Sometimes used to refer to a person suffering from an undetermined disability.
"Did you see how bad he fucked that up? What a dibbly."
by Lukaysmom January 25, 2010