I take no responsibility for these, but thank you to Peter and Jean Reeve who submitted them:
A bicycle can’t stand alone; it is two tired.
A will is a dead giveaway.
A backward poet writes inverse.
A chicken crossing the road: poultry in motion.
When a clock is hungry it goes back four seconds.
The man who fell onto an upholstery machine was fully recovered.
A calendar’s days are numbered.
He had a photographic memory which was never developed.
The short fortuneteller who escaped from prison: a small medium at large.
When you’ve seen one shopping centre you’ve seen a mall.
When she saw her first strands of grey hair, she thought she’d dye.
Santa’s helpers are subordinate clauses.
Acupuncture: a jab well done.
She was only a whisky maker, but he loved her still.
Atheism is a non-prophet organization.