Top Definition
An extreme state of lethargy, cause unknown, but very tiring. Seismic Lethargy can strike down its victim without warning and usually whilst they are trying to do something. It usually affects young males and reported cases are more prevalent in the warmer summer months. The consensual course remedy is to remove the patient from the environment that is inducing the lethargy.
Rhys is unable to continue today because he is suffering from Seismic Lethargy.
by David Harding September 07, 2006
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