Top definition
An atheist.

Based on Ray-O-Vac, a company that used to made old fashioned vacuum tubes for radios.

The tubes are similar to athiest in that they have a void inside, are subject to quick overheating when activated or provoked, and often stop working for no reason.
"Yo Bill, you seen Jesse lately?"

"Na, he's in his parents basement flaming Christians on the internet about Easter along with the other rayowacs."
by cafienner April 04, 2010
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