Top Definition
Where you take a gas pump or any form of a gasoline dispensor, and put it in a girl's vagina and begin to fill it with gasoline. You then light your penis on fire and begin to have intercourse with her.
"Hey Hubert, I gave my girlfriend The Atomic Gas Pump last night."

"My pussy is still on fire from The Atomic Gas Pump I got last Christmas."
by Harry Megaboner May 03, 2009

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