Don't worry, it's very clear that the painting was done by a human, most likely a human with one eye removed and a feverent if incorrect understanding of design and anatomy.
Ryan NorthI'm totally applying assumed Creative Commons rights and ripping this post from Jason verbatim, since it says everything I want to.
Ryan NorthThe secret to writing sound effects is having a room you can be alone in, trying to make the sounds yourself, and seeing what comes out. It's similar to if you're writing a character talking with their mouth full: the only way I know to transcribe that is to stuff my fist in my mouth and write down what sounds I make when I try to talk.
Ryan North