A dike or dyke is a vertical or near-vertical intrusion of igneous rock that has forced its way upward through overlting strata.
* Thrax is short for 'Anthrax', a lethal disease who's main symptom is a terrible, deadly fever. Despite those two strong similarities, Thrax shares no other similarities with the Anthrax disease and is in fact not an Anthrax virus, and is most likely a fictitous disease. *The song Thrax is humming is called 'Fever'. Thrax is short for 'Anthrax', a lethal disease who's main symptom is a terrible, deadly fever. Despite those two strong similarities, Thrax shares no other similarities with the Anthrax disease and is in fact not an Anthrax virus, and is most likely a fictitous disease. *The song Thrax is humming is called 'Fever'.
1 Many songs feature an extended version of this phrase; the birds and the bees and the flowers and the trees. 2  The song  Hummingbird Heartbeat  by Katy Perry also states this is the story of the birds and the bees, referring to sexual intercourse.