Not to be confused with Kirby (the vacuum cleaner)'s cousin.
Sneezing is the basically the action of going "ACHOO!", or as the fancy people say, a 'convulsive expulsion of air from the lungs coming through the nose and mouth'. But we don't care about what the fancy people say. It is very similar to that of a fart, except that a fart traces its origins from one's gluteus maximus, while a sneeze originates from one's nasal cavity. Sneezing is also a sport performed worldwide which involves whoever taking part being covered in snot.
The simple sneeze may trace its origins to viral and bacterial diseases often spread around to others by a certain Numberblock, which are often common colds. These mortal diseases can often cause certain square Numberblocks to have a 'tickly nose' for some reason, and then end up sneezing out smaller square Numberblocks, oddly enough, as forms of nasal mucus, leaving behind a 'square with a hole' or something. The aforementioned smaller squares are then forced back inside of the bodies of certain square numbers.