Listen to the sound clip Mm. Heh. from How I Met Your Mother - Season 9: Mm. Heh. Mm. Heh. This sound is from How I Met Your Mother - Season 9 "How I Met Your Mother - Season 9" is the final installment of the popular television sitcom that aired from 2005 to 2014. This ninth season provides a gratifying conclusion to the show's long-running storylines and reveals the much-a… Go to the full soundboardwith more sound clips Search