One person says a word and the next comment (NOT reply) has to say a word that they think is the opposite or would be "bad to the above word".
e.g. Fire > Water > Dry > Fill > Empty
Some tips:
- Try to keep it unique, don't just say "nuke" for everything.
- Don't just use prefixes or suffixes. If someone says "Disappear" don't just make it "Reappear". Find a different antonym
- Your thing can be more than one word, just try not to make it too long