A variant of the word ass that is used by people with a low or non-existing IQ.
Idiot: Listen to this goofy ahh laugh
Dick: I'm sorry, what? Did you mean ass?
Idiot: Shiiii dawg, I ain't tryna sound smart.
Dick: The 'S' key is literally closer to the 'A' key. You're not saving any time typing it that way. Might it be because of a desperate attempt to sound ghetto because you feel at loss with your own identity?