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.
As you know, nasal mucus is normally clear and thin. During times of infection, it can change color to yellow or green either as a result of trapped bacteria or due to your body's reaction to viral infection. Mucus build-up is also caused by cystic fibrosis with extremely thick production of mucus that is difficult to expel. However, sometimes the problem is not that you are producing too much mucus, but that it's not being cleared away effectively.