Aaaaa baaaaaaaaaa
It's when you just want to blurt something out or maybe to break the silence so you go like this:
(Silence), AAAAA BAAAAAAAAAAAA!!!!!!!!
(Silence), AAAAA BAAAAAAAAAAAA!!!!!!!!
Hey so what do you do for a living?...........................................................AAAAAAAAAA BAAAAAAAAAAAAAAA!!!!!!!!!!!