fifty dollars, and fifty dollars is fifty dollars'

One year Esther and Morris went to the fair, and Morris said,

'Esther, I'm 85 years old. If I don't ride that helicopter,

I might never get another chance.'
To this, Esther replied, 'Morris that helicopter ride is fifty dollars,
 and fifty dollars is fifty dollars.'

The pilot overheard the couple and said,
'Folks I'll make you a deal. I'll take the both of you for a ride. If you
can stay quiet for the entire ride and don't say a word I won't
charge you a penny! But if you say one word it's fifty dollars.'

Morris and Esther agreed and up they went.
The pilot did all kinds of fancy maneuvers, but not a word was heard.

He did his daredevil tricks over and over again, but still not a word.

 When they landed, the pilot turned to Morris and said, 'By golly, I did
 everything I could to get you to yell out, but you didn't. I'm impressed!'

Morris replied, 'Well, to tell you the truth, I almost said something when
Esther fell out, but you know, fifty dollars is fifty dollars!