What comes once in a minute, twice in a moment, but never in a thousand time?
What do you add in oil to make it boil?
Which word in the dictionary is spelled incorrectly?
What word of five letters has only one left when two letters are removed?
What vehicle is spelled the same backwards and forwards?
Who are the two brothers who live on opposite sides of the road yet never see each other?
What key won't open any door?
