@LukeAlmighty I'm trying to think if I ever had one. I have played games over LAN before but it was always with one other person and I was living with said person at the time.
I've heard of people having "underground LAN parties" at schools when the teacher wasn't looking (or if you had a teacher that didn't care). My brother told me that he played N64 ROMs through a network supported emulator with friends all the time during high school, but I never got the chance because by the time I was in HS, they installed Active Directory on all of the computers.