Try The equivalent of a touchdown in american football, scored by grounding the ball in the try zone.
Scrummage The way play is restarted after a minor infraction, a scrummage, or scrum, involves 16 big hairy smelling guys grabbing hold of each other and grunting and pushing alot.
Forwards The larger, stronger ruggers. Their primary job is to push people around.
Backs The smaller, quicker ruggers. Their primary job is to try to play two halves of rugby without messing up their hair.
Scrum-half The guy who's too fat to be a back, but too small to be a forward. The scrum-half's job is to distribute the ball to the backs once the forwards have done all the work to win possession.
Hooker Member of the front row who exchanges sexual favors for money or goods.
Line-out When the ball goes into touch (out of bounds) play is resumed with a line out, where the ball is thrown between a line of forwrds for each team who must jump for the ball.
Knock on When a ball carrier releases a ball forward in any way except to kick. Results in a scrummage to opposing team.
"Ruck over" This is shouted (usually by Dyon) to tell the forwards that the ball has been taken to the ground, so they should attempt to push the opposing players off of the pile to obtain possession of the ball.
"The boot" References the rugby boot (or cleats), which is often used as a tool of retribution. 3/4" aluminum spikes carefully applied to a rugger's head can make him think twice about taking a cheap-shot on one of your teammates.
"All American Anti-Christ 666 Satan's Little Helper" This is a standard line out call, carefully coded by Randy "Satan is my Benefactor" Smith, to tell his teammates to whom he is throwing the ball, and at the same time greatly disturbing opposing Judeo-Christian players.
"Kick to touch" This is shouted to tell the player with the ball that it would be advantageous for them to kick the ball out of bounds before they are way-laid by a host of tacklers.
"Minute, sir" This is a phrase that speaks volumes about the nature of rugby. Anytime a player is injured, play does not stop. Instead, after the next stoppage of play the injured player (or his teammates if he is unable to verbally communicate) must ask permission to be injured. The referee will then award the injured player a minute to recover from any injury or impairment less he be replaced. A single player may only have three minutes per game.