Related Clues:
- It can be frightening when one is popped
- It may come with answers
- Surprise in class
- Classroom groan elicitor
- Pump, in a way
- Popped item?
- ''Pop'' test
- You might be unprepared for it
- It may be unwelcome when popped
- Sporcle.com feature
- Student's dread
- Set of questions
- Facebook time-waster
- Dreaded thing when you didn't do the reading
- Thing popped in school