Here’s too much information for you: being of Nordic descent, I have an average to slightly below average amount of body hair. No hair on my back, though, so I’ll probably never need to use the $49.95 Extended Reach Body Hair Groomer from Hammacher Schlemmer. It’s a relatively simple upgrade to the standard trimmer in that part of the handle extends an extra three inches, “allowing you to trim unwanted hair in hard-to-reach areas in the middle of your back,” according to the product page.
It’s water resistant, too, so you can try to get at those hard-to-reach areas in the shower. I’m starting to feel uncomfortable so I’m gonna just end this post now.