Ba Dum Tsh
The sound of a drum that comes after someone says something so stupid it makes your brain scream.
Ba Dum Tsh when my teacher told a joke about math and it was worse than a math test.
My brother did the Ba Dum Tsh after I said, 'I’m so hungry I could eat a horse.'
The class did the Ba Dum Tsh when the principal told a joke about the school’s new bathroom.