Zappa's band performed this hysterical (not to mention groovin') routine, er, routinely during the mid-70's.  It appeared on both the You Can't Do That On Stage Anymore Vol. 2 live album and the Dub Room Special video.  It breaks me up every time I hear/watch it.

Seriously, who really does stuff like this on stage anymore?

Hear the YCDTOSA V2 version of "Room Service" on YouTube

Watch the live performance from the Dub Room Special

This is part of a week-long series on the music of Frank Zappa.