The first person will post three words that associate with each other in some way.
The next person keeps ONE of the words, and adds two more words that also associate with each other and the continuing word, to once again have three associated words.
And so on...
Example:
Stir - Shake - Shiver
next person>>
Shiver - Cold - Snow
The next person keeps ONE of the words, and adds two more words that also associate with each other and the continuing word, to once again have three associated words.
And so on...
Example:
Stir - Shake - Shiver
next person>>
Shiver - Cold - Snow