Used to refer to an ancient chat protocol invented back when Internet sites started appearing, the mighty Internet Relay Chat, or IRC.
Some people think it's outdated because new technologies, such as Slack, Discord, Mattermost and others supposedly provide more features and are more user friendly than the old protocol.
A sexual position involving four people (two men, two women). The two men are facing eachother while sitting down and the ladies are taking it up the ass while using a two-way dildo.