It refers to a point in the base system between 2nd base and 3rd base. It is dry-humping. It has always seemed more than simple groping but it is less than the handjobs/blowjobs of 3rd base. Dry-humping now has a definite place on the base system.
guy1: hey, y'know the base system?
guy1: wher does dry-humping go?
guy2: base 2.5
guy1: ok cool thats good to know
guy3: you guys are fucking retarded
A Cuntervention is an intervention held for someone who is a cunt. Everyone knows this person is a cunt and they want to tell this person because he or she doesn't realize. It can involve banners and letters for said person to open and read. they should all say something like "You are a cunt" It differs from a normal intervention because it offers no friendly advice or support on how to overcome the problem, it just informs this person of how much of a cunt they are.
Awesome girl: Hey you know that swaggy prick?
Awesome dude: Yeah.
Awesome girl: he is a cunt Awesome dude: yeah
Awesome girl: we should tell him
Awesome dude: lets have a Cuntervention