Idle internet-surfing, game-playing or practicing of a casual hobby--what someone does when they are done with or avoiding work. Temporary busywork or diversions. Can be used as a descriptor, and a verb.
"Yeah, I finishing my work, I think I'm just going to spend my time noodlin' now."
a southern redneck sport involving shoving your hand in a catfish nest underwater hoping it will bite your hand. after the fish bites your hand you grab it's jawbone and pull it out.