Thus far, this society has one constitution in three forms. Or rather, it has one provisional constitution which is being converted into three forms. They all say exactly the same thing, but exist for slightly different reasons.

There's a run-of-the-mill, easy to understand and not very interesting version. This is the baseline from which the others will be derived. It exists so that there's something suitably official to wave at the University to prove we're a well-thought-out society and that we actually exist and deserve funding. Then there's the Lewis-Carrol-On-Acid-Rewriting-The-US-Consitution-After-Being-Grannied-At-A-Game-Of-Nomic version. It exists to reduce stress and sanity in equal measures. Finally, there's the Lovecraftian version which combines the fiendish vocabulary of a turn of the century horror writer with said horror writer's firm grasp of reality. After all, did he not say:

The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far.
--H.P. Lovecraft, "The Call Of Cthulhu"

As to the reasons that it exists, suffice it to say that you are not ready to know them.

The Cambridge University Worshippers of Cthulhu Society

1. The name of the society shall be "The Cambridge University Worshippers of Cthulhu Society".
2. The society's aims shall be manifold, but will in the main be restricted to:
   1. Making Great Cthulhu known to the students of Cambridge University
   2. Making H.P. Lovecraft and his works known to the students of Cambridge University.
   3. Trying to bring about the ascension of Great Cthulhu and the subjugation of the world under his dominion.
3. Membership shall be extended to all members of the University and any others who apply to the committee. There shall be an annual membership fee which shall be decided upon at the Annual General Meeting each year by the committee. The committee shall have the right to grant honorary (free) membership to any it chooses, and lifetime membership to those who so desire it. No application for membership may be refused on grounds of race, religion, sex or sexual orientation. Species may be a valid reason for refusal of membership, and no Fungi of Yuggoth may become members of the society. In addition, all Outer Gods, Elder Gods and Great Old Ones are to be granted honorary lifetime membership. All members shall have full voting rights at any Society meeting.
4. Meeting of the society shall occur irregularly, with a minimum of one meeting per university term, and shall be known as Rites. The Annual General Meeting of the Society shall be held in the latter half of the Lent Term of each year, and shall be known as the Grand Ceremony. The time and venue of the Grand Ceremony shall be determined and publicised by the committee at least fourteen full days before the event.
5. The Committee of the Society shall be known as the Inner Sanctum and shall be elected at the Grand Ceremony each year.
   1. Nominations for posts within the committee will ideally be submitted to the Secretary a minimum of three days before the Grand Ceremony, but will doubtless be accepted when made at the Grand Ceremony itself. Nominations for positions within the committee may be made on behalf of any member of the society by any members of the society. A minimum of two members must nominate a given member before they may stand for a position. These nominating members may be the same person provided they can claim to possess multiple personalities with a straight face and may possess the same body as the member nominated. A person nominated by his/her/itself may only stand for a position, however, if fewer than two members nominated by two separate and different members have been nominated.
   2. Members of the Committee have the right to vote by proxy. The proxy must be named before the meeting to a member of the committee and the intended vote explained both to the proxy and the committee member. The proxy is required to be insensitive but inanimate.
   3. Votes shall be counted by two members attending the Annual General Meeting who are not standing for any positions within the committee.
6. The Inner Sanctum shall comprise the following members
   1. The President, known as The Keeper of the Sacred Knives, shall preside over rites and ceremonies, and shall possess a full vote and casting vote where necessary.
   2. The Vice-President shall perform the duties of the Keeper of the Sacred Knives when the Keeper is unable to perform them.
   3. The Secretary shall keep the minutes of all society meetings and meetings of the committee. He/she/it will also be responsible for correspondence between the committee and the general membership, and maintaining a record of membership.
   4. The Junior Treasurer shall maintain the financial records of the society.
   5. A member of the society shall be chosen to administer to and keep record of the library of the Society, and he/she/it will be known as the Librarian.
   6. The Senior Treasurer shall have those duties required by the University of the person holding the post of Senior Treasurer.
7. Amendments to the constitution may be proposed by any member of the society, but must gain the support of a minimum of three members of the committee before the amemdment may be presented to the society to be voted upon. Any proposed amendments must be presented in writing to the Secretary a minimum of one week before the meeting at which the amendment is to be voted upon. Amendments may be voted upon at any society event at which all the committee members are present, and must be carried by a two thirds majority.
8. The membership fee shall be £2 per year of membership or £5 for lifetime membership.
9. Upon dissolution of the Society, something or other will happen which will have to be worked out later.

A plain-text version of the mundane constitution may be found here.

Regrettably, at the time this page went to print, the Obfuscated Constitution and the Lovecraftian Constitution were not available and so aren't up. They will be.