ラテン語のbulbus、吃音、擬音語、barbarianと同じ語源から。 Boobyはスペイン語由来で、非常にゆっくりした鳥。
At the end of every session the dominie had the satirical custom of presenting his tawse as a "booby-prize" to some idle or stupid lout whom he picked out as meriting this distinction so that next time they met he might start fresh and fair with new pair for a new set of classes. [Ascott R. Hope, "Dumps," "Young England" magazine, 1883]