Guitar Riff - who can tell me how to play the simple riff in this sketch - Calhoun Tubbs on In Living Color?

If you're not familiar with Calhoun Tubbs, here's a link to a clip.

http://www.tv.com/media_player/696/4/vie...

If memory serves, it is slide in open G tuning.

The high notes are the blue notes around the 10th and 12th frets.