Listen to the sound clip Mmm hmm hmm mmm hmm from Plinkett Soundboard: Mmm hmm hmm mmm hmm Mmm hmm hmm mmm hmm This sound is from Plinkett Soundboard Red Letter Media, LLC, stylized as RedLetterMedia on YouTube, is an American film and video production company operated by independent filmmakers Mike Stoklasa (formerly of GMP Pictures and Jay Bauman. Harry S. Plinkett reviews. Go to the full soundboardwith more sound clips Search