noun. A happy helping of heathen heaven.
Real citation: "Going to forsake my homework for a book signing with Richard Dawkins. Atheist-gasm!"
(Oct. 6, 2009, istaranews, Twitter, http://twitter.com/istaranews/statuses/4666689705)
Made-up citation: "Christopher Hitchens can give me a major-league, industrial strength, code-4 atheist-gasm anytime he wants. Anybody got a towel?"