The "Centipede"...

Just noticed this weird technique that a couple people do at my local break. As they are scratching for a wave and starting to lag behind, they undulate their bodies to scoot forward on the board. If you're familiar with breakdancing, it looks like the "centipede" dance move.
Looks a little odd and dolphin-like, but seems to be effective. Just wondering if anybody has noticed long boarders doing this? Is it a "legit" technique? Does it have a name?
Thanks
Looks a little odd and dolphin-like, but seems to be effective. Just wondering if anybody has noticed long boarders doing this? Is it a "legit" technique? Does it have a name?
Thanks