A black hole made up of very condensed emotional turbulence with a periphery known as the "discrimination horizon" -- anything that gets pulled in past it is just rolled into the turbulent stew. Analytical attention and clear thought tend to get drawn toward it and sucked in to it, but none has ever been known to escape it. Scientists are puzzled and suspect that there may be a far larger distribution of these Black Thoughtholes throughout the cognitive topography of the universe at large than was previously imagined.
When black thoughtholes appear in the proximity of a human head they appear identical to certain other kinds of holes associated with that peculiar form, a phenomenon scientists have observed for some time but are unable to shed any light on.