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1.
A lapse in ability to think or function due to extreme amounts of fangirling or fanboying
"Did you see the new episode of Supernatural?!"
"Of course! I think it gave me a faneurysm."
by Wofl Iron April 26, 2007
 
2.
A lapse in ability to think or function due to extreme amounts of fangirling or fanboying.
"Did you see the new episode of Supernatural?!"
"Of course! I think it gave me a faneurysm."
by Wofl_Iron October 29, 2007
 
3.
(verb.) A spastic action caused by a surprise update from a fandom.

The actions can range from totally hilarious to dangerous. Many people experiance Faneurysms when they get tour updates or purchase a new volume of their favorite manga.
Charlotte had a faneurysm due to her late updates concerning Radiohead.

Cat had a faneutysm when she watched the new episode of Supernatural.
by TheKidWithCatEars September 21, 2011