Can a circle have corners?

Are airplanes slow?

Are you single?

Are there any crash courses for pilots?

Can you eat without a mouth?

Are apples red fruit?

Are violins and pianos musical instruments?

Is the Pope catholic?

Do you like red color?

Do you believe in ghosts?

Are you a preacher?

Can you explain what ‘okay’ means?

Have you ever fired a gun?

Is there a wrong thing that sounds right?

Do cats all speak the same language?

Do you sing silly songs to your pets?

Are you sensitive to other people’s feelings?

Do you have an imaginary friend?

Does your best friend have long hair?

Can a tiger be your pet?

Can you do more than 100 pushups in 5 minutes?