Based on the context and the answer, generate a question. 

Context: At a pinch I look , if anything , like I might have a pen I could possibly lend someone in a post office or something , but opening beer bottles with my teeth ? I ' m not that badass . I shook my head slowly " No , sorry man . No can do " .

Answer:

They did not want to damage their teeth .



Why did they refuse to open the beer bottles ?