When you start Googling a topic which leads you to something totally unrelated that's really exciting, unexpected, and magical, which gets you so intrigued and psyched that you order something having to do with it on Amazon or iTunes.
This afternoon I had a Googlegasm while I was trawling the internet for lamps and ordered Chekhov's short stories on Amazon when I discovered what a hunk Chekhov was.
Googlegasm. -- after performing a succesful and happy search on Google bodily fluids issue forth suddenly, and in great quantity, covering the searchers screen, causing the monitor to suddenly short out and burst into flames.
"Jimmy come downstairs for dinner now!"
"Mom! Can you bring me up a another fire extinguisher ? I just had another Googlegasm."