Yeah, it's slippery too, but it's also ooey and gooey.
Here's the definition of Nuru Gel as taken from this 
website, or for more information, visit this 
website:
Nuru Gel is an exceptionally slippery massage gel that originated in Japan and is made from an extract of Nori deep water seaweed.
 Nuru Gel  is used to give a Nuru Massage, which is a body-on-body massage  that is popular throughout Asia. One person plays the role of the  masseuse and coats their body with a slick layer of our famous gel.  They then slide along their partner and use their entire body to  give the massage. It is an incredible experience unlike anything  you have tried before.
   The most important element to a perfect Nuru Massage is ensuring that you use the best quality 
Nuru Gel  available. Our products use only the original formula and are imported  directly from Asia. Nuru Slide Gel is made with a Nori seaweed  extract, which is absolutely necessary to get the slickest, most  slippery massage. You can feel completely safe using our product because  it is colorless, odorless, tasteless, non-toxic, and loaded with  beneficial nutrients. It is largely water based, and contains a touch of  camomile herbal extract. 

   Nuru Massage has historically been a pleasure found only in the Orient. But  recently it has been introduced to the Western world and has become the  hottest trend in bedrooms across our country. Our product is made in  Japan and imported directly from Asia. Many of our competitors have  turned their backs on the traditional ingredients and are using  synthetic chemicals. We believe that this is an obviously inferior  method that disregards the natural history of Nuru massage.
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I hope Nuru massages stay around, but it seems like a lot of the providers that I know do it, aren't doing it anymore.  It's fun, but it is work and the clean up after is probably the most difficult part.