Bartender: We don't have no beer, just tequila.
Ned: What's tequila?
Bartender: ...It's like beer...
Dusty: Is it fattening?
Bartender: ...Fat-ten-ing?
Ned: What's tequila?
Bartender: ...It's like beer...
Dusty: Is it fattening?
Bartender: ...Fat-ten-ing?
Bartender : We don't have no beer, just tequila.
Ned : What's tequila?
Bartender : ...It's like beer...
Dusty : Is it fattening?
Bartender : ...Fat-ten-ing?
http://www.moviequotedb.com/movies/three-amigos/quote_23433.html