I'm old enough to have had LAN parties* while young enough to not be allowed to drink, do they count? I imagine they'd still be fun given the right game and the mouse/keyboard vs controller option that's always been missing. Stupid fiddly little sticks...
*for all the young 'uns - in the dark ages before broadband games were so laggy online you had to take your full size ATX computer and CRT monitor to a friend's house to play multiplayer games properly.