Nothing to it!
A player posts a word and the next player postc the first word that pops into their head after seeing it.
Example:
1. Player A posts "Rabbit."
2. Player B posts "Foot."
3. Player C posts "Sock."
4. Player B posts "Puppet."
5. Player A posts "Creepy."
Rules: No doubleposting. Have fun!
First word: Letter