Hi-ho, Silver! Away!
From Zappa Wiki Jawaka
"Hi-ho, Silver! Away!" is a catch phrase used by the Western character The Lone Ranger when he wanted his horse to gallop away with him.
Lenny Bruce once did a routine about The Lone Ranger.
"We had a lot of laughs. For example, one night in Seattle, in the middle of the show, (guitarist) Ike Willis started to do an imitation of Lone Ranger, blurting out, 'Hi, ho, Silver!'. I still don't know why it happened, but I cracked up every time he did it. It must have been road fatigue. He'd keep yelling in the most inappropriate places. The whole show was riddled with bad Lone Ranger jokes and me not being able to sing the right words. I enjoyed that night." (FZ in Pulse Interview)