Related Clues:

• Swimmer’s count
• Units slightly longer than three feet
• Swimmer's exercise
• Mario Kart units
• They're longer than yards
• Olympic units
• Warmup in gym class, maybe
• Lot timers
• They disappear when people stand
• Places for napkins
• Olympic distance measures
• There are about 1,600 in a mile
• Slurps (up)