How do you deal with friends who think forex is a scam?

Say you trade currencies and someone's face says "get-rich-quick". The industry earned the reputation — the scams outnumber the honest participants — which makes explaining your actual trading awkward.

How do you handle it?

• how you describe what you actually do
• whether you tell people at all
• what you'd say to someone whose only reference is scam ads

Honesty helps here: acknowledging the scam problem makes the "I'm not one of those" conversation easier.