A small party carried out in a small place, for instance a caravan, in which a lot of alcohol will be consumed, and generally both inanimate objects and livers are broken. These usually happen on a fairly frequent basis once a venue is found, and continue until said venue is completely destroyed.
When a woman bends over, you run up behind her and thrust yourself in her.
She then, normally in alarm, tries to move away, where you then follow her as if you are and annoying object being towed.
Changed into a verb from caravan, it means to go on holiday in a caravan. It is probably one of the worst past-times known to man as fun activities include things such as emptying your excrement from the caravan or setting fire to your caravan and others by causing a chip-pan fire.