Samuel L. Jackson did the first few days of the campaign for Capital One Bank's new credit card by saying that it offers 1 1/2% cash back "every damn day." They then changed it so later commercials said "every single day."
A radio commercial for Samuel Adams beer back in the 90s had the founder of the company saying that the difference in carbs between a regular and a lite beernote This was before Sam Adams made a lite beer is about "three tortilla chips worth. BFD." Though it's really only an example of this trope to people who realize that BFD stands for "Big Fucking Deal."