Hannah: Now, if they ask you if it's real butter, what do you say?
Clay: It's a butter-based product.
Hannah: And you have to smile too when you say this.
Clay says nothing.
Hannah: I know, it's terrifying. But, it sells the big lie.
What does "it sells the big lie" show here ?
Possible meaning of "the big lie" here.
My interpretation :
- The big lie could mean "it's a butter-based product".
- "It" could mean "smile".