What it is

A player behaves in a way that is not allowed, such as abusive language to an official or an opponent, or fighting.

The penalty

The penalty is 15 yards, plus an automatic first down if the defense commits it. Two of these in one game lead to the player being thrown out.

More detail

Officials throw a yellow flag when they see it. The other team may accept the penalty or decline it if the play turned out better for them.

Animated play

Blue circles are the team with the ball. X marks the other team. The yellow oval is the ball.

1. A player disagrees with a call and walks toward the official.
2. He loses his temper and shouts abuse. Insulting an official, or fighting, is unsportsmanlike conduct.
3. The flag costs his team fifteen yards. A player who is penalized twice in one game is ejected.