The sudden rush of aggravation and disorientation felt when becoming ensnared in a previously unnoticed spider web, often accompanied by random thrashing movements. The intensity of a spidergasm may be heightened if the subject is not fully awake or suffers from arachnophobia. A secondary effect may be felt up to an hour later if the spider responsible for the web is found in the subject's hair or clothing.
Chuck lapsed into an uncontrollable spidergasm as his face brushed against a web as he exited his house.
by Some Guy with DSL September 07, 2005