best nights:
meet up in pub about 6 for a quiet drink. (couple of pints)
quite a few people turn up including some you didn't realise were coming.
quiet drink turns into a small drinking session (about 5 pints)
people decide to go to a club on a whim
club plays decent music, has decent cheap drinks and is full of decent people.
lots of drunken antics happen and the next morning everyone has gossip about the night before
Pulling doesn't necessarily make the night better, especially if it's a munter or you end up getting the cold shoulder but wanting more.
UDI's (unidentified drinking injuries) are amusing
If a camera is there then the pics are always interesting
But the main things - lot of mates, lots of stories, nothing goes wrong.