Related Clues:

• Silent performance
• Art with no lines
• Gesture without words
• One who's speechless
• Silent ape
• Street artist in a striped shirt, stereotypically
• Silent impersonation
• Quiet performer
• Performer who remains silent
• One apparently trapped behind glass
• Charades action
• Be good at charades
• Weird Al "She Never Told Me She Was a ___"
• Weird Al song "She Never Told Me She Was a ___"
• Act without dialogue