Tony Manero: I gotta have an afternoon off, and I'm takin' it.
Fusco: If you do, you're fired.
Tony Manero: I'm doin' it!
Fusco: Then you're fired!
Tony Manero: Then **** you, asshole!
  
  
  
  
  
   
  
  
Fusco: If you do, you're fired.
Tony Manero: I'm doin' it!
Fusco: Then you're fired!
Tony Manero: Then **** you, asshole!
 Tony Manero : I gotta have an afternoon off, and I'm takin' it. 
 Fusco : If you do, you're fired. 
 Tony Manero :  I'm doin' it!  
 Fusco :  Then you're fired!  
 Tony Manero :  Then **** you, asshole!  
http://www.moviequotedb.com/movies/saturday-night-fever/quote_20667.html