When one member of a Lan Party runs unnecessary webpages and or videos (usually in the Highest resolution possible) that they use so much bandwidth that other Lan party members start to lag
Dude 1: "come see this ultra high def video of this cute lolcat!"
Dude 2: "Lan foul! That video is making me lag so bad."
Dude 2: "Lan foul! That video is making me lag so bad."
by DrKnightHawk April 9, 2011