Tickle Me Elmo's fire

Tickle Me Elmo's fire is an electrical space phenomenon in which luminous plasma attaches to and covers objects passing through the Bermuda Tetrahedron. It forms the border of the Bermuda Tetrahedron, and is named after the fact that it has the effect of tickling robots. It is red-colored, just like its namesake. The Planet Express crew encounters it on its voyage through the Tetrahedron in "Mobius Dick".

Trivia

 * The phenomena's name is a parody of, its terrestrial equivalent, and the doll, based on the Sesame Street character it depicts, named Elmo.