Due to their addled, shifty nature and incoherent mode of speech, the only two known methods of differentiating between sober and inebriated jaikies are a) a measuring the diameter of the pupil and b) measuring strength of the piss smell emanating from the individual's filthy shell-suit bottoms.
The term jaikie derives from Frosty Jacks, an extremely cheap white-cider-cum-paintstripper sold in local off-licenses, and popular among less salubrious individuals as a more inexpensive alternative to the ubiquitous Buckfast.
Can also be used as an adjective.
Human being: "You're no oil painting yourself, you fucking jaikie bitch! I'd rather put my willy in the hand of Dr No than in your jaikie, fag-stained claws. Now, jog on."
Can also be used as a term to describe an ugly woman.
"Look at the state of that jaikie!"
"What a jaikie bastard"
When insulting a woman:
"You're jaikie as fuck! Scoot, ya fuckin ugly nugget afore ah slap ye wan"