The loodle is a musical instrument, also called the doodle. It originated in souther Pennsylvania when a youngster tried to recreate one of his favorite songs.
Ian: "Loodle boodle loodely boodley loodleeeeeeeee boooo!!!"
Tony: "Is that your new loodle?"
Ian: "yeah i just got it today!!!"
Tony: "sounds out of tune"
Ian: "go loodle yourself"