This is my mothers word, it means to be nosey, pushy and a general pain in the ass. It sometimes means having an attitude the size of montana on your shoulders and projecting that all over the place. Generally this is not a nice thing but can be used in a nice context.
Oh he's being such a noodge!
(verb) To nag or annoy someone, especially in order to motivate them to do something. (noun) Someone who does this.
I hate to be a noodge, but you're going to have to do some work today.
Someone who will not go anywhere fun, or do anything fun and, in general, rejects all fun things. He or she prefers to sit home.
Mom: Dad, lets go on a trip! Dad: No. Mom: You're being a noodge.