1 definition by Brettford
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 7, 2013