Ka = Ka (Dark Tower) a mysterious force that leads all living (and unliving) creatures. It is the will of Gan, the approximate equivalent of destiny or fate...Ka can be considered to be a guide, a destination, but is certainly not a plan - at least, not one that is known to mortals. Ka is not necessarily a force of good or evil; it manipulates both sides, and seems to have no definite morality of its own. The official Dark Tower site (see below) describes ka as the following: "Ka... signifies life-force, consciousness, duty and destiny. In the vulgate, or low speech, it also means a place to which an individual must go."
Ka-Tet: Literally speaking, ka-tet means "one made from many." Ka refers to destiny; tet refers to a group of people with the same interests or goals. Ka-tet is the place where man's lives are joined by fate.
Tet: A group of people with the same interests and goals.
Thinny, Thinnies: Thinnies are places where the fabric of existence has almost completely worn away. These cancerous "sores on the skin of existence" have increased in number since the Dark Tower began to fall.
Todash: In Wolves of the Calla, we are told that traveling todash is similar to the state of lucid dreaming. However, unlike lucid dreaming, both body and mind travel todash. On SKMB often means one who has disappeared or not been seen posting for awhile.
Burrito is all mine. It is to signify when the discussion has become pointless. It says, "burritos are just as relevant as your point". It is also to signify when a thread has devolved to bickering and is no longer of any use. Another usage is "hey, lighten the F up, dude".
It just means thing have gotten so silly, why not talk about burritos instead? They are just as important.
Burritos are very important. You just don't joke about some things.