No Good

I was looking over an intro Macroecon book, through the chapter about the Fed and specifically the federal funds rate. Here's what I found funny:

"Memory Hint- Are you trying to keep the federal funds rate and the discount rate straight in your mind? The words "federal funds" begins with two f's. If you push them together, they look like two sleeping bags side by side. You can use this to help you remember the federal funds rate is the overnight lending rate."

Really, sleeping bags? Let's see... "ff". Nope, horrible. That 'trick' is more to remember than what the fed funds rate is itself, anyway.

Cute, but fail.