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You're offside if you're closer to the opponent's goal than both the ball and the second-to-last defender when the ball is played forward. But you only get penalized if you're actually involved in the play. The rule has changed over the years, now focusing on whether you're interfering rather than just where you're standing. VAR has made calls tighter but also sparked endless debates about armpit offsides.

Deliberately stepping up as a defensive unit just before a pass to catch attackers offside. Risky because mistiming leaves attackers through on goal. Requires the whole back line to move together on the same cue. Some teams use it constantly; others avoid it because one mistake is catastrophic. VAR has made tight offside calls more reliable, which should help traps, but marginal decisions still create controversy.

A player who spends their whole career at one club. Rare now because the transfer market moves everyone around. When it happens, the player becomes a club legend and symbol of loyalty. Totti at Roma is the modern example - he turned down Real Madrid and United to stay in his hometown for 25 years. Cynics point out some one-club men just never got offers to leave.

A quick pass and return - you pass to a teammate, run past your marker, and receive the ball back. Also called a wall pass or give-and-go. Simple but effective for breaking through tight defenses. Requires two players on the same wavelength and a pass with enough pace that the defender can't recover. Basic attacking play that never goes out of fashion.

Running outside and past a teammate who has the ball, usually a full-back going around a winger. Creates a 2v1 against the defender, who has to choose between following the runner or staying with the ball. Even if the pass doesn't come, the threat of it stretches the defence and opens space to cut inside. One of the most basic attacking moves, taught from youth level, and still works at the top.