k'caw
a loud noise you make when you're stuck in a conversation and nothing makes sense
'He did a 'k'caw during the debate when his teammate talked about lollipops and math.'
'She yelled 'k'caw' when her friend asked her if she wanted to go to the mall on a Tuesday.'
'I did a 'k'caw when my teacher asked me to explain why the sky is blue.'