by Craven Moorecock March 8, 2009

Person A: Look! Person C just uploaded five definitions to Urban Dictionary!
Person B: Didn’t he stop making definitions last year?
Person A: I guess.
Person B: Looks like he set off a silent geyser.
Welcome back.
Person B: Didn’t he stop making definitions last year?
Person A: I guess.
Person B: Looks like he set off a silent geyser.
Welcome back.
by ChameleonDragon April 11, 2019

Placing the tip of a penis up to the nostril making a flush, airtight fit and upon ejaculating creating a sensation not unlike a sneeze in reverse.
by Iamash July 20, 2008

The action of emptying your semen into a females mouth, and then quickly grabbing a bottle of Pepsi and pouring some in her mouth, then shaking her head, making her look much like a spewing geyser.
"She had just finished cleaning her room, so I busted a Female Geyser on her, and there was Pepsi-Nut everywhere."
by John Boy December 23, 2003

by Bistratus December 6, 2019

-"Man, I guess it's been a while for him because after I gave him a rubber gasket, it was a stage 5 of The Geyser Effect."
by Ariel87 February 15, 2009

by Schwing33 May 31, 2015
