Okay, I borrowed this one from the plus fun forums...
The first cat posts a word or a short phrase or expression, the next cat does likewise starting with the last word of the previous catâ€™s post, and so on and so onâ€¦
Cat 1: orange crush
Cat 2: crushed ice
Cat 3: ice cream
Cat 4: cream and sugar
Get the idea? The next post has to start with the word â€œsugarâ€.