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2.
A word that is Japanese. It means awesome but it is pronounced Psyco. It is used commenly around my neighborhood, and that is not a lie.
Person 1: OMG, that outfit is Saiko!
Person 2: Psyco?
Person 1: no, no. Saiko as in Awesome?
Person 2: oh that's soooo saiko!
by Asians_are_over_powering_you June 13, 2011

Words related to Saiko

awesome amazing cool horrible psycho psyco
 
3.
The yaoiest person on all of the world.
Dudes, Saiko loves her some yaoi.
by Tony July 19, 2004