Around the world middle aged, female linguists have independently discovered that the word "COUGH" has a silent p.
This discovery has repeatedly gone unnoticed by the rest of the linguistic world, but apparently for generations the above demographic of linguists have made this irrefutable discovery. It has also been noted by middle aged females in other industries.
There is some question as to whether the silent p comes in the middle of "COUGH" or at the end of "COUGH", but there it is definitely there somewhere.