[JohnR34231]

I think that your recollection is actually incorrect. I think in the press conference, Jim Harbaugh said quite plainly something like, “50 is a nice even number. “

And according to this write up by rule of tree, he used slightly more colorful language when explaining it to Toby Gerhart 
"I want to put 50 on these motherf***ers," Harbaugh replied.

https://www.ruleoftree.com/2014/9/4/6103...ane-7-year

I heard that too, except with a different expletive.

[JohnR34231]

I think that your recollection is actually incorrect. I think in the press conference, Jim Harbaugh said quite plainly something like, “50 is a nice even number. “

And according to this write up by rule of tree, he used slightly more colorful language when explaining it to Toby Gerhart 
"I want to put 50 on these motherf***ers," Harbaugh replied.

https://www.ruleoftree.com/2014/9/4/6103...ane-7-year

I heard that too, except with a different expletive.