If you say "boo" slowly and drawn out it means you disagree with someone and want to shun them. If you say "boo" quickly and short it means you want to startle them. Any other words change their meaning based on their note length?
@itsmehenning "yeah" comes to mind as a possibility. Quick means agreement, drawn out means something else ("thinking about it but probably yes" or "maybe" or "I"m judging you" depending on context?)