Nubbing

Guitarist Buckethead uses two to four fingers to tap the strings on both hands to create a robot like sound, it was created by Shawn Lane, another guitarist, who made a guitar track that was sped up to inhuman speeds and Young Buckethead wanted to try to play what he heard. He came close but the way he did it ended up becoming a trademark of his, not including the momentary killswitch.

*super fast tapping*

Guy: Whoa that guys fast with nubbing! I bet he's a hit with the ladies.