The uncontrollable clicking caused by the highlighted links in any Wikipedia article, or similar wiki-type website, resulting in hours spent following a chain of subjects not related to the initial search.
"I wanted to research the Tacoma Narrows Bridge. Three hours of clicking later, and I'm reading about 'William Howard Taft' and 'Taylor Hanson', and 'Lesbianism in Erotica'. It was a serious case of Wikilepsy."
by Sable Phoenix October 31, 2011