"You see a boat filled with people. It has not sunk, but when you look again you donβt see a single person on the boat. Why?"
"How can the number four be half of five?"
"I have keys, but no locks and space, and no rooms. You can enter, but you canβt go outside. What am I?"
"What are the next three letters in this combination? OTTFFSS"
"This belongs to you, but everyone else uses it."
"What comes once in a minute, twice in a moment, but never in a thousand years?"
"Which word in the dictionary is always spelled incorrectly?"
"What can you hold in your right hand, but never in your left hand?"
"Three different doctors said that Paul is their brother yet Paul claims he has no brothers. Who is lying?"