Empty Hourglass

The joke plays on the similar pronunciation of "waste" and "waist." An hourglass that has no sand is useless, making it a "waste of time". It also brings to mind a "waist" which is part of the human body.

• Hourglass
• Sand
• Time
• Body
• Waste
• Glass

• What do you call a clock on a belt? A waist of time.
• What do you call a girl with an hourglass figure? -- A waist of time.
• How to make time fly? Answer: Throw a clock out of the window.
• I wanted to make a joke about clocks, but I got no time for that.