habbledabble
A loud, dumb thing you yell at people to make them laugh, even though they're not supposed to.
I yelled 'hobbledabble' at my friend during the 'No Laughing Challenge.' I won, and he cried.
My teacher used 'hobbledabble' to break up a fight. Now everyone is laughing, and the principal is mad.
I did a 'hobbledabble' in the middle of a quiet library. I got in trouble.