Related Clues:

• It's hard to keep going
• O
• Fad toy
• Popular purchase in the 1950s
• Wham-O product
• Fad of the '50s
• Classic Wham-O toy
• Circle of wood used in dance
• '50s fad item made by Wham-O
• Toy mentioned in "The Chipmunk Song"
• Ring spun round waist
• Toy ring
• 1950s fad
• Circus ring?
• Fifties fad involving undulation