Try to make sense of what you see below and give me the answer.
The single word answer is:
The pigpen cipher is a monoalphabetic cipher that uses unmarked partially drawn boxes for the letters A-I and the same boxes marked with a dot in the center for the letters J-R. That's what the sketch near the top refers to. (There are also wedges with or without a dot for the letters S to Z, but these are not used here: it's a pigpen, not a pigsty.)
The bottom row has eight pairs of overlaid triangles: In each pair, one triangle points either left or right; the other triangle points either up or down. Each of the pairs has either a single star (for the undotted letters A-I) or two stars (for the dotted letters J-R). The fifth and sixth as well as the seventh and eigth pairs share their stars. Each single or double star encodes a single letter:
P: bottom left dotted
I: bottom right undotted
G: bottom left undotted
P: bottom left undotted, again
E: top right bottom left, i.e. centre undotted
N: top right bottom left, i.e. centre dotted
But, but, ...
... don't we have to know what the overall answer is in order to decode the message? Well, there's a big hint in the title: kOay is Pig Latin for Ok. (Well, either that or it's some wordplay, as the OP points out: kOay is O in Kay, so "Oink!")