[Ann Drysdale]

Q. What's the difference between a magician's wand and a policeman's truncheon?

A. A magician's wand is for cunning stunts...

[Roger Slater]

Thanks, Max. If I win the prize, I'll prize the win.

But I can't find the "submit" button. Could you be more specific?

PS-- Never mind. I found it. It's in bold, the second paragraph under the the "listen" link.

[Mark McDonnell]

What's the difference between a cosmetic surgeon and a government Ofsted inspector?

One tucks features...

Edit: I suppose mine and Ann's are more spooneristic than the 'word reversal' idea of the example. Not to say unbroadcastable.

[Ann Drysdale]

I've worked out (by running my finger round the face of my watch) that 3pm ET is 8pm GMT. Do you think they'd phone us, Mark?

[Roger Slater]

Here are the three I sent very quickly to prevent myself from spending the next two weeks trying to come up with better.:

1. What's the difference between an astronaut and an exhibitionist? One walks on the moon, the other moons on the walk.

2. What's the difference between a revenue agent in Arizona and a revenue agent in New Orleans? They both levy taxes, but only one taxes levees.

3. What's the difference between a window repairman and Hillary Clinton? One is forever sealing glass, the other is forever hitting the glass ceiling.

[Mark McDonnell]

I don't think Will Shortz is going to like any of mine, Ann. He looks far too clean-cut.

[Mark McDonnell]

What's the difference between a nun at prayer and a nun in the bath?

One has hope in her soul...

(See what I mean? In my defence, I heard this in the playground of St Mary's Primary school when I was about 9. I can't claim authorship...)