The act of hanging on your ceiling fan and dropping a large log into your partner's rectum, thus slapping her innards. The vagina can work too, but she may not like it.
by Eric DontTryThisAtHome BigDick December 7, 2010

When a property owner knowingly reroutes dirty water (toilet water, dirty shower water, dirty sink water after doing dishes, etc) to the shower. Causing visitors to take showers in gross smelly water. Typically done at cheap motels and trailer parks.
Dude, what’s with the shower? The water smells gross.
It’s a cheap motel bro, they cannonballed the plumbing system.
It’s a cheap motel bro, they cannonballed the plumbing system.
by Ryyanrun August 29, 2023

Cannonballism is a bad habit that could pose a threat to your health, as eating cannonballs is not good.
by Dagingerly1 March 31, 2023

When a male equipped with the correct war arsenal penitrates all 3 holes of his partner within 3 minutes causing her to squirt a blast of period blood and cum that forms into a cannonball and lands on the portapody floor that the act originated in.
by Thank M3 Later February 18, 2025

by JamaicanPilgrim June 21, 2011

A sex act where one person farts a chicken leg out like a cannon, while the other person proceeds to catch it in there mouth and swallow it
Girl: “Baby, I’ve been wanting to try that move you were talking about.”
Boy: “Oh, the Somalian Cannonball?.”
Girl: “Yes!”
Boy: “Let’s do it’.”
Boy: “Oh, the Somalian Cannonball?.”
Girl: “Yes!”
Boy: “Let’s do it’.”
by poocheesie March 27, 2024

A person so stupid and who acts as if they have slammed their head against and oncoming bus repeatedly, or their mother queefed while giving birth killing many.
Used to describe anyone stupid enough to even exist.
Used to describe anyone stupid enough to even exist.
(In warframe trade chat)
(Guy 1): legendary core for 120?! This guy is an idiot!
(Guy two): this is the kind of guy who seems like he was born a cannonball baby
(Guy 1): legendary core for 120?! This guy is an idiot!
(Guy two): this is the kind of guy who seems like he was born a cannonball baby
by EbonyShinigami October 30, 2017
