Who said "I'm not backing down from anyone."?

This quote is attributed to Mac.

I'm not backing down from anyone. - Mac

"I'm not backing down from anyone."

Mac

"I am a five-star man, and I deserve a five-star woman."

"You know what it is, bitch? A system of pipes."

"I'm not gonna be ignored, Dan."

"When I'm dead, inside or out, that's when you'll know I'm gone."