People say that the elevator doesn't go all the way to the top or that someone's elevator doesn't go all the way to the top to mean that someone is stupid or mentally ill. I get the feeling his elevator doesn't go all the way to the top.
Too much mucus buildup in throat is most often due to excessive post nasal drip. This can be caused by allergies, flu, and the common cold. The phlegm that accompanies an infection can hang around long-term. It usually clears up within 4 to 6 weeks, but for some people the problem can drag on for months.
It generally runs down the back of the throat unnoticed. Sickness such as a cold, the flu, or a sinus infection can cause this naturally occurring mucous to build up and thicken causing the post nasal drip to become more noticeable. It can also cause a cough, sore throat, and difficulty swallowing. [3]