Wet Noodle

So here is another idiomatic expression: to have the personality of a wet noodle.

A wet noodle is a person who is pessimistic or depressing; a naysayer, someone with a negative attitude. (source). The way I've seen it used and heard it used is referring to a person with a bland personality.



In a different context, a "wet noodle" is a handy dandy device or tool used to pull cables, fish wires through a wall, etc. (technical description).