To use one's own intelligence and intellectual ability; to think logically and rationally. ("Noodle" here is slang for head or brain. Often said as an imperative.) Come on, Dean, I know you can figure this out on your own. Use your noodle for a change! I can't believe you were arrested for selling marijuana. What were you thinking? Why don't you use your noodle once in a while?

To discuss, speak, or think about something in an idle, aimless, or purely speculative manner. ("Noodle" here is slang for head or brain.) He spent most of the party noodling about all these pseudo-philosophical ideas that just made him sound pretentious. When I came into the room, they had started noodling about the pros and cons of capitalism compared to socialism.

To ponder, consider, or speculate about something. A noun or pronoun can be used between "noodle" and "over." ("Noodle" here is slang for head or brain.) As my mind wandered into daydream, I began noodling over the possibility of giving up my job and moving to Japan. I wanted a day or two to noodle over the deal before I agreed to anything.

Do not try to mislead me or fool me. Oh please, do not hang noodles on my ears—you clearly forged your mom's signature on this document! If you don't want to go, just tell me. Don't hang noodles on my ears and fake being sick.