Jo: (when Bill hesitates to drive towards a tornado) Have you lost your nerve?
Bill: (laughs) Tighten your seatbelt! (tightens Jo's seatbelt and drives down the ditch)
  
  
  
  
  
   
  
  
Bill: (laughs) Tighten your seatbelt! (tightens Jo's seatbelt and drives down the ditch)
 Jo:   (when Bill hesitates to drive towards a tornado)  Have you lost your nerve? 
 Bill:   (laughs)  Tighten your seatbelt!  (tightens Jo's seatbelt and drives down the ditch)  
http://www.moviequotedb.com/movies/twister/quote_57119.html