Fool:

"The very piano Napoleon played at Waterloo."
"No wonder we lost."

Bless yer 'eart! LOL. But the term they used was "you'll have to bus or bust". I'm not familiar with the word in that usage, and I think I've heard it more than once. Is that the same as vamp, which I understand as "fake it"? Is it an 'English' term or a 'musical' term?