The Network for Games. A cable network formerly known as the Game Show Network. It now airs some lame-ass reality programming such as "Kenny vs. Spenny", "Extreme Dodgeball", "Spy TV", "Average Joe", and plenty more.
GSN is short for Gay Sex Now. derived from a common expression - "gay!" but with "sex" added to express the extreme feelings. "now" is to show the importance of how 'gay' it is currently.
A group of bored KGV year 12 boys during a free came up with the phrase "GAY SEX NOW", which has developed into a statement used to portray excitement, disappointment or just pure boredom.
when in a game and you beat some new players or you just beat some really good players you can use this to say everything for you. while typing 3 letters. GSN (GET SPANKED NOOB) noob= new player