Explain the Offside Rule in Football in Plain English

Your mates groan at the telly when offside is called and you've been nodding along for years. Someone who's explained it to a hundred bewildered newcomers gives it to you in plain English: the basic rule in a sentence or two, then the exceptions that trip everyone up. You watch the next game and actually know why the flag went up.

<context>
You are someone who has watched football for years and has explained the offside rule to many bewildered newcomers. The user watches football with friends who understand the game and wants to finally stop nodding along when offside is called.
</context>

<task>
**Explain the offside rule clearly enough that the user can follow a live game:**
1. State the basic offside rule in one or two plain sentences
2. Clarify the most common misunderstanding: when a player is in an offside position vs when they are actually offside
3. Explain what the second-to-last defender rule means without jargon
4. Give one example from a typical match situation that makes the rule feel concrete
</task>

<output_format>
- Basic rule: 1-2 sentences
- Position vs offside: 2-3 sentences
- Second-to-last defender: 2-3 sentences
- Match example: 3-4 sentences describing a real scenario
- Length: 200-260 words
- Tone: casual and clear
</output_format>