ok first, someone posts a noun like fish or mario or peanutbutter or whatever! if somebody posts peanutbutter, the next person might post peanut butter and jelly. then in the same post write a new noun. the next person does the same thing trying to make the two relate. you can also do things like monster movie or spider-man but using conjunctions works nicely .
heres how it might look-
person1: fish and chips