Peggy: Sex sells.
Don: Says who? Just so you know,
the people who talk that way think that monkeys can do this.
And they take all this monkey crap and just stick it in a briefcase, completely unaware that their success depends on something more than their shoe shine. You are the product. You feeling something. That's what sells. Not them. Not sex. They can't do what we do. And they hate us for it.
Dons gives Peggy a lesson in advertising.