As in the Tennessee Housing Development Agency.
It’s also the sound you make when you say “da” with your tounge between your front teeth, and it’s Titus’ favorite new noise to make! (with excessive amounts of drool included) I’m glad, since every once in a while he switches to a straight-up “thhhh” or “da” sound, and the latter is the first step in saying my name! Of course, “ba” is much more well established, so I’m a bit behind in the running to the word “ball”, but I figure I can entertain him better than most balls, so I’m not going to be intimidated!