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From Jamaican Patois.
takes the word 'Gyal' meaning Girl.
and 'Iss' which would be a variation of 'Ish'.
A Gyaliss is a guy that sleeps with a LOT of girls and doesnt care about it. Basically a Male whore, however to be called a Gyaliss is sometimes seen as a compliment. This is only when it said guy-2-guy and compared with being Gay.
Alicia: Hey girl you see that guy? he's sexy!
Hayley: Yeah hes cute but he's a Gyaliss!
Alicia: Ah really? forget it then.
by Mac Tayo April 06, 2005
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