i got this off the twilight forums as it would be great for HP coz we have so many characters here's hellgirl223's version of the rules
So you have to pick a character to hug, kiss and slap, after that write 3 other character names from HP
the next user must pick who to kiss, hug and slap from the names you wrote, and then the game continues.

so for example

i pick 3 characters
ron
harry
hermoine
and the next user
Blah_blah (made up user(hopefully!)) posts
kiss: harry
Hug: ron
Slap: hermoine


so my 3 starting characters are
hagrid
barty crouch jr
bloody baron


good luck and check out the kiss slap hug for more info
link