this is one of my friend's and I kinda stole it from him...
stare
"Nuts? Squirels like nuts. Squirels are crazy. Crazy? I was crazy once. They locked me in a rubber room. I don't like rubber rooms, 'cause rubber rooms have rats. Rats? I hate rats. Rats drive me crazy. Crazy? I was crazy once.... " etc. etc.
You have to branch off from either crazy, nuts or squirel.
For example
Eserlin
Oh my GOD! THERE'S A NINJA IN THAT TREE! IT'S GONNA KILL ME! IT'S GONNA- Oh, wait. False alarm. That's a squirrel. My bad.
She said squirel so you would start with "Squirels are crazy. Crazy? ...."
and so on.
He's got a longer version on his website, which I can't quite remember right now, so if you want to know it, PM me and I'll find it for you.