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1.
The term you give to someone with an unstable personality.
A Jaday will be someone that is annoying, self centred, loud, irrational and confusing. But at the same time, a Jaday can be kind, compassionate, intelligent, reasonable, funny and comforting.

It is this polarity in their personality which leads to the conclusion that a Jaday's personality is unstable. On the whole, once you have met a Jaday, your life is richer for the experience.

Watch out for that person, I think they are a Jaday!
by Dr Describer April 14, 2011
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