8
After a male cums inside his partner's belly button while they're laying down he mounts them reverse cowgirl and slides back so his anus is over the belly button. Next, he farts and the result looks like the Old Faithful geyser.
Guy 1: So I gave my lady an Old Faithful last night..

Guy 2: And?

Guy 1: Let's just say we need to repaint all four walls.
by Cap'n Sea-Biscuit Crunch April 29, 2009
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9
When a male (i.e. someone with a penis) masturbates to the point of ejaculation, at which point he inseminates his own visage; a self-facial; jizzing in one's own face.

Also, a CoRec Ultimate team at UC Berkeley.
"Might I borrow your handkerchief? I just Old Faithfulled and my glasses could use a wipe."

or

Stranded on a desert island, Gerry had to resort to an Old Faithful to fill his facial quota.
by uncoveredmoose January 28, 2010
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10
The act of utilizing chewable breath mints and diet soft drink to produce a violent eruption of carbonated water from a vagina. Useful in retrieving items jammed up against cervix during the practice of cannon fodder.
I jammed Mentos and Diet Sprite up her cunt to get her to do an Old Faithful.
by Profane Urbane November 06, 2010
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11
After taking the girl's nose ring out, finish in her mouth after receiving oral, then tickle the young lady creating a geyser-like eruption out of the side of her nose, similar to Old Faithful.
Redface observed the magical beauty of the impressive spray that came out of Kelly's nose when he gave her an Old Faithful.
by Red Face November 08, 2007
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12
The act off nutting (ejaculating) inside someone's mouth while they are on their back then stomping on their stomach. Those wearing a Used Poncho can avoid the geyser's angry eruption.
My girlfriend took one in the mouth from me last night so I stomped on her stomach, thus completing the Old Faithful. Wish I would've had a used poncho on...
by Brettford January 07, 2013
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13
A sexual act. It is when you pour an entire bottle of lube into a girls ass. Then, upon the first thrust, the lube sprays out like a geyser.
"Whats all that lube for"

"Yellowstone, here we come, Old faithful, baby."
by AsevenX88 August 13, 2011
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14
The act of ejaculating semen on another's rectum then demanding that the person upon which ejaculation occurred must pass gas immediately. Ejaculator then looks at clock and says, "right on time."
Little Tim gave Sally the good ole' Old Faithful last night.
by bobbyz18 June 17, 2011
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