Birthday paradox

In probability theory, Birthday paradox is the phenomenon concerning the probability that, in a set of n randomly chosen people, at least two will share the same birthday. The birthday paradox is the counterintuitive fact that only 23 people are needed for that probability to exceed 50%. The birthday paradox is a veridical paradox, i.e. a paradox that produces counter-intuitive results, but is demonstrated to be true nonetheless.

I always thought it was super rare for two people to share a birthday, but the birthday paradox says it only takes 23 people to make it likely!

by Emotional Cruiser September 26, 2025

Dog Paradox

Something that goes on forever.

When dogs chase their tail, they go in a circle. Circles don't end, which makes them have a dog paradox.

by J.T. Mersmer November 8, 2019

SHIT SANDWICH PARADOX

The SHIT SANDWICH has different parts explained by HEIGHT of the SHIT SANDWICH PARTS and the name of the PARTS.

MAKING A SHIT SANDWICHES

HIGHEST BREAD OF CHOICE ROOF
HIGHER CEILING OF BREAD
SHIT FECES EXCREMENT POOP CRAP CENTER
LOWER. FLOOR

LOWEST UNDER FLOOR

Here is the SHIT SANDWICH PARADOX where you are sitting in a BUILDING you can't see the outside of the BREAD which is the HIGHEST , you can see the HIGHER part though but in a SHIT SANDWICH you can't see the HIGHER PART. Again where you are sitting in the BUILDING you can see the LOWER part as the FLOOR but in the SHIT SANDWICH you can't see the LOWER PART because the SHIT IS COVERING IT and the LOWEST part in the BUILDING you can't see UNDER THE FLOOR BUTT in a SHIT SANDWICH you can see the LOWEST PART which is OUTSIDE THE SHIT SANDWICH so therefore YOU CAN'T MAKE A SHIT SANDWICH IN ANY BUILDING but the only thing is , it TURDS OUT the CENTER IS ALL SHIT without any SANDWICH you can't make in any BUILDING therefore you need to call the PEDOPHILE and not employ any REJECTION but that is a PARADOX too.

by INSERT CAREFULLY September 15, 2021

Martultimatum paradox

Paradox in which you are stuck in a situation where you can't decide whether to give hope or reject one's feelings basically having no other ways to deal with something until it dies off.

I.e: Someone who is afraid of commitment but doesn't want to hurt the other's feeling by rejecting them.

Officially named after the person who caused the paradox hypothesis

"Damn bro im in a Martultimatum paradox with this girl rn" "Make up your mind bro"

by nightmarerobma January 2, 2024

Others-First Paradox

In the arrow paradox, Zeno states that for motion to occur, an object must change the position which it occupies. He gives an example of an arrow in flight. He states that in any one (duration-less) instant of time, the arrow is neither moving to where it is, nor to where it is not.15 It cannot move to where it is not, because no time elapses for it to move there; it cannot move to where it is, because it is already there. In other words, at every instant of time there is no motion occurring. If everything is motionless at every instant, and time is entirely composed of instants, then motion is impossible.

Whereas the first two others-first paradoxes divide space, this paradox starts by dividing time—and not into segments, but into points.

by Others-First Paradox April 26, 2021

the fän paradox

if something hates everything, that means they hate hating everything, but then that also means they hate hating everything, and that continues on endlessly, so, do they really hate everything?

PERSON UNO: I HATE EVERYTHING
PERSON DOS: jesus christ calm down ur gonna start the fän paradox and cause a fucking resonance cascade

by deliriousidiot February 12, 2024

The Inferno Paradox

With every coming InfernOC they expand horizontally, typically in the hips or breasts.

"You're doing The Inferno Paradox right now, look at those honkers!"

by CkuhickenJ September 2, 2023