NOODLES

(usually in the plural) a string or strip of pasta

"She slurped a long noodle up out of her soup."

A person with poor judgement; a fool

The brain, the head

To think or ponder.

""Noodle that thought around for a while" said Dr. Johnson to his Biblical Interpretations class."

To fiddle, play with, or mess around.

"If the machine is really broken, noodling with the knobs is not going to fix it."

To improvise music.

"He has been noodling with that trumpet all afternoon, and every bit of it sounds awful."