Who said "Mmph mrmph (and that's the final word)."?

This quote is attributed to Kenny McCormick.

Mmph mrmph (and that's the final word). - Kenny McCormick

"Mmph mrmph (and that's the final word)."

Kenny McCormick Wisdom

"Mmph mmph mrmph!"

"I'm not fat, I'm just big boned"

"Dude, we're in third grade"

"This is so cool"

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."