A term in football referring to a penalty that is called when a team has more players on the field than the rules permit. Football only allows 11 men on the field during a play. Too Many Men on the Field can happen when a team improperly uses a substitution.
During a substitution the twelfth player must be off the field before the snap. If the twelfth player is attempting to leave the field but has not done so before the snap then a penalty of "Too Many Men on the Field" will be called. This penalty can be assessed against an offending team also when there are twelve or more players in a huddle for 3-5 second or twelve or more players in formation before the play. The offending team is penalized 5 yards when a penalty of Too Many Men on the Field is assessed against them.