Rip returns a chainsaw to the store he bought it at.  Rip says to the clerk,
"You told me I could cut down 60 trees a day with this.  I've only been able
to cut down 2 trees a day."  The clerk says, "Let's have a look."  He plugs it
in, pulls the cord and starts it up.  Rip looks around and says, "What's that noise?"