Okay, basically say 1-3 things people would do in real life that comes from KH, for example...
1. You see a shadow on the ground and wait at the ready with your house key for it to come up and attack you.
2. Dress in a black cloak and run around with a wierd hair cut and "weapon" complaining of having no heart.
3. Try to turn a stick into a Keyblade.
Then the next person would do 4(5 and 6 as well if they wanted) and so on.