Acronym for Full Fledged Roll-Out. What happens at LAN parties when playing Blizzard games like Starcraft:Broodwar & World of Warcraft. The term is derived from "ready to roll out!!!" which is what you hear when completed seige tanks exit the factory in Starcraft.
"We are getting ready to have a full-fledged rollout, so if you could just leave us alone for about 3 to 4 hours, that would be much appreciated, thanks!"