I would do these on people who you know because they can make some people feel stupid. They are funny if they work properly.

These all require user interaction and is done well in either a group or one on one.

1. Spell Shop
What do you do at a green light?
Answer: Go - most say stop

2. Whats 5+5, 9+1, 6+4, 7+3, 1+9,etc.. (wait for a response to each equation - should all add to be 10)
What are aluminum cans made of?
Answer: aluminum - most say tin

3. Say coast "coast"... say boast... "boast"
What do you put in the toaster?
Answer: Bread - most say toast

4. What does y-e-s spell? "Yes"
What does E (pause a bit) y-e-s spell?
Answer: eyes - most people have NO clue
(this one gets most people)

Have fun making your friends look silly!

If you can smile when things go wrong, you have someone in
mind to blame.