Overdoing, over-expressing, or over-communicating can cause you to lose credibility.
The over-expression of your concepts and perceptions will make people tune you out. The power of your influence will be minimal. Communication is no longer effective; essentially they have been overdosed.
The drug is shot into the vein; boundlessly taking over the blood stream. They are now paralyzed- numb. In this current predicament, your dialogue can never manifest into healthy communication. The conversation could go on for hours and not hold any substance.
Aim to be concise. Allow communication to work its way through. Let your rhetoric evoke further articulation.