It's simple:
^Answering the person above you (Because they posted a comment about you, and you must answer)
A comment about yourself
V A comment about the next person to post.
Example to get us started off:
^ There is NO ONE! WHOOSHIE!
Is freaking out because she said WHOOSHIE!
V Is eyeing me suspiciously.
and then the next person would answer this V with their ^ and continue with the rest.
Lets begin!
^ That's infinaty
Watching Once Upon A Time
V Are eating a cookie