It sounds exactly like NNNNNNNGGGGGHHHH...
You've been hit by a whale harpoon.
En gah without the ah
The sound of tires when they skid but in slow motion.
u stepped on your ****????
You need more fiber in your diet.
A car trying to start but struggling.
My ex-husband's sinuses.
A ball point pen in an electric pencil sharpener...
no not crazy frog again. *facepalm*