Arcane - Mysterious or secret, esoteric etc. In other words, we don't know what it means either!
Church - A building for public worship. In our case, that means the pub, bar or a mates house. Where else can you imbibe of the holy beer?
Glossary - A list and explanation of abstruse, obsolete, dialectical or technical terms. i.e. This page! All right... so we've used a dictionary, there's nothing wrong with that is there?
Spade - A tool for digging or cutting ground, turf etc. Also something to do with playing cards... now what did the dictionary say again...
Spading - A description for the act of using a spade. In the case of the Church of Lager, it is descriptive of the light stunning of members of the opposite sex for the purpose of having a good time with. That is the spader, not the spadee. The spadee probably being unconscious of course. One should also be aware that spading in the literal sense doesn't actually mean 'digging a woman/man'... although, come to think of it...