Doing a Dave is when the main instigator of a night out gets wasted and disappears home early on said night out after persuading everyone it's a good idea to go out. This usually involves Turbo Shandy and cider.
Doing a Dave is when while playing Halo, someone gets shot with a Spartan Laser but doesn't die straight away.
This count for multiple hits on the player.
Doing a Dave is where somebody takes control of the music, plays progressive songs that are boring as fuck e.g BT but claims they are "classic" and was once played at the start of a set.
To cap it off the persondoing the Dave will only play 20 seconds of a song before going off on a tangent to a totaly different song.