Can't get enough of adding "in your pants" to various book titles?
I can't. (What does that say about me? that I should write for teenagers, probably!)

Just a couple from my shelf:

Girl Sleuth in Your Pants
Forgotten Fads and Fabulous Flops in Your Pants
Pop Culture Landmarks in Your Pants
The Little BookRoom in Your Pants

So go here to John Green's video blog. See the video (the "in your pants" bit is at the end) and read the copious comments to give yourself a giggle fit.