A tour guide was leading a group of military personel through an old building. As they climbed the stairs, the guide said, "Watch your heads as we get to the top. There's a nasty protruding ceiling." When the guide reached the top, she turned around and watched as each person after her bumped their heads one-by-one. After they got to the top, she asked them, "What group are you?" They said, "Military Intelligence."
So mine is:
Military Intelligence
Bozone, n.:
The layer of gas surrounding a person which prevents good ideas from penetrating.