Finding your way to a page on Wikipedia, and following from link to link for countless hours until you know everything about a subject, and probably a lot more about something else.
Dude, I just took a major wikisession and now I know everything there ever was to know about the Soviet Union.
by Soybonev October 30, 2011
Something that one latches onto and becomes obsessed with to the point of reading about or contributing to an article on at wikipedia.com
After watching an episode of Jem and the Holograms it became my new wikisession
by spacecowgirl March 29, 2007