Image source: Ravelry http://www.ravelry.com/patterns/library/camel-stitch-slouchy
Camel stitch was a new one to me: but in UK terms it's simply a half treble worked into the back loop (US terms: half double crochet worked into the back loop).
It's another example of how exploiting front and back loops - easy to do - can create interesting textures in crochet.
The pattern on Ravelry:
The pattern on Sheepishly Sharing:
The pattern on YouTube: