ka sounds just like it looks. ka. when i was younger and my parents took us to mass, there was always a chinese couple who sat in front of us, caddy corner, indian style on the pew. one day, the woman must have had some sinus congestion or something, so out of nowhere, she begins to sneeze. after a few unproductive sneezes, she gathers her phlegm and watch out - KA - it went flying in the church. KA is the sound she made as her mucus flew and joined the choir sitting in front of us. (ok, well, i dont know where it really went, but it was funny as hell and we laugh about it to this day!