At Air America Radio, Dr. Demento opened a gate between the worlds, unleashing the dreaded Yog-Sothoth upon the listeners, before moving with glee to Dothan, Alabama. Al Franken attempted to follow Dr. Demento soon after, but only got as far as congress.
A contraindication is a specific situation in which a drug, procedure, or surgery should not be used because it may be harmful to the person. There are two types of contraindications: Relative contraindication means that caution should be used when two drugs or procedures are used together. (It is acceptable to do so if the benefits outweigh the risk.)
A factor that renders the administration of a drug or the carrying out of a medical procedure inadvisable: A previous allergic reaction to penicillin is a contraindication to the future use of that drug.