I don't know if this idea would work for debates, but you might have a good discussion about ways in which English is a strange (and funny) language. Both of these posts had me laughing and agreeing with the posters.
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How about is Jaffa cake a Cake or a Biscuit? Then go move the Jaffa Cakes from the Biscuit Isle and put them in the Cake Isle!
Genious!!
Here are some:
How did the egg cross the road?
She scrambled across
What do you call two banana peels?
A pair of slipers!
What are two things you can never eat for breakfast?
Lunch and supper.
Where did the hamburgers go to dance?
The meatball.
i also need some funny english topics for conversation classes.
Allain
Let's rule then!!