A Cuil was a theoretical unit of measurement proposed in 2008 (source) that was intended to be used to describe, "the level of abstraction away from the reality of a situation." Instead it immediately became a joke and a meme, as not even those who proposed it knew what it really meant or how to wield it's confounding power. The "‽" symbol is called an Interrobang and is sometimes thought to be associated with cuil theory.
Here's the commonly cited example:
You ask me for a Hamburger.
If you asked me for a hamburger, and I gave you a raccoon.
If you asked me for a hamburger, but it turns out I don’t really exist. Where I was originally standing, a picture of a hamburger rests on the ground.
You awake as a hamburger. You start screaming only to have special sauce fly from your lips. The world is in sepia.
Why are we speaking German? A mime cries softly as he cradles a young cow. Your grandfather stares at you as the cow falls apart into patties. You look down only to see me with pickles for eyes, I am singing the song that gives birth to the universe.
You ask for a hamburger, I give you a hamburger. You raise it to your lips and take a bite. Your eye twitches involuntarily. Across the street a father of three falls down the stairs. You swallow and look down at the hamburger in your hands. I give you a hamburger. You swallow and look down at the hamburger in your hands. You cannot swallow. There are children at the top of the stairs. A pickle shifts uneasily under the bun. I give you a hamburger. You look at my face, and I am pleading with you. The children are crying now. You raise the hamburger to your lips, tears stream down your face as you take a bite. I give you a hamburger. You are on your knees. You plead with me to go across the street. I hear only children’s laughter. I give you a hamburger. You are screaming as you fall down the stairs. I am your child. You cannot see anything. You take a bite of the hamburger. The concrete rushes up to meet you. You awake with a start in your own bed. Your eye twitches involuntarily. I give you a hamburger. As you kill me, I do not make a sound. I give you a hamburger.
You ask me for a hamburger. My attempt to reciprocate is cut brutally short as my body experiences a sudden lack of electrons. Across a variety of hidden dimensions you are dismayed. John Lennon hands me an apple, but it slips through my fingers. I am reborn as an ocelot. You disapprove. A crack echoes through the universe in defiance of conventional physics as cosmological background noise shifts from randomness to a perfect A Flat. Children everywhere stop what they are doing and hum along in perfect pitch with the background radiation. Birds fall from the sky as the sun engulfs the earth. You hesitate momentarily before allowing yourself to assume the locus of all knowledge. Entropy crumbles as you peruse the information contained within the universe. A small library in Phoenix ceases to exist. You stumble under the weight of everythingness, Your mouth opens up to cry out, and collapses around your body before blinking you out of the spatial plane. You exist only within the fourth dimension. The fountainhead of all knowledge rolls along the ground and collides with a small dog. My head tastes sideways as spacetime is reestablished, you blink back into the corporeal world disoriented, only for me to hand you a hamburger as my body collapses under the strain of reconstitution. The universe has reasserted itself. A particular small dog is fed steak for the rest of its natural life. You die in a freak accident moments later, and you soul works at the returns desk for the Phoenix library. You disapprove. Your disapproval sends ripples through the inter-dimensional void between life and death. A small child begins to cry as he walks toward the stairway where his father stands.