It's easy.. just fill in the blanks with as many words as you'd like in the previous person's post and add a statement with blanks so the next poster can fill them in!
example:
If it wasn't for ______ I'd probably be out ________.
fill in the blanks to create a statement like this:
If it...
to play the “my cookie” game is easy. you just have to distract the person that has the cookie so that you can take the cookie.
something like this:
“look, a squirrel! my cookie!”
or maybe
“after buying Chester three rounds of beer, he finally has to relieve himself. my cookie!”...