This sound is also used in Turkish (I guess many people around the world also make this sound). We make this sound when we are for example, awed, exited, afraid, etc... The Turkic tamgas related to this sound are these: http://www.angelfire.com/tn3/tahir/sf129b.jpg http://www.angelfire.com/tn3/tahir/sf129a.jpg Some of them look like a man lifting his arms to the sky in awe. Showing some kind of respect to the creator holding it in awe. It's been theorized that the word Oğuz (Oghuz) ~ Ogur comes from this tamga.