Test should be designed to find out what the students know, not to see if you are more clever than your students. I never design questions to trip up my students. Sometimes during a quiz a student may ask..."is this a trick question". My response is always..." it may be a tricky question but it's not a trick question". Tricky eludes to the idea that there may be a subtle aspect to the answer, but the question is not design to trick someone into the wrong answer.
