Several years ago I annoyed fair number of people, trying to get help identifying a poorly remembered Christmas song I'd heard on the radio or maybe in a retail store.

"CHRIIISTMAAASSS/ CHRIIISTMASASSS" I'd sing in a vague approximation of the melody, making hand gestures and bobbing my body to impart, poorly to be sure, the sprightly feel of the tune

The singer had some grit in his voice. And when it came out of my mouth it basically sounded like cookie monster. Presented with this, no one could figure it out, nor should they have been expected to.