The act of intense intercourse, usually in the doggie position, where the male freefalls from a distance of 6 inches or greater into the female. Hence leaving feeling like "geronimo".
by Skizzle D's Nutz! April 30, 2024
Bob: After I ate that bowl of pineapple, she asked for me to eat that ass
John: Awesome dude your first pineapple plunge!
John: Awesome dude your first pineapple plunge!
by Mememachine02 December 25, 2017