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The sexual act of ejaculating into a partner's anal cavity and then farting out the semen. A woman who perfects the action is known as an Old Faithful.
Darnell: "Damn, that was an explosive Colorado Hot Geyser!!!"
Traci: "Thanks, hon. They don't call me an Old Faithful for nothin'."
by Merriam EBster March 15, 2015
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