Flickr user "roz leibowitz" uploaded this image from the 1950s, "A basic comb-out for back lines." If only I had more hands and could see the back of my head.
(Click on the image to see the full version.)
I made the mistake of googling "Guiche." Apparently it's a term also in Urban Dictionary (although these days what isn't?) If you're looking to spice up your bob, check out the Money Curl: