Teacher: "Why are you late this morning?"
Student: "Its my alarm clock. Everyone got up except me!"
Teacher: How did the alarm clock make you the only one not to get up?"
Student: "There are eight of us in the my family and the alarm clock was only set for seven."
It was time for the final and the student depending upon getting at least one right answer on the chemistry test.
The question was "If H2O is water, what is H2O4?"
This was a quick question for most, but it took the student some thinking time.
Finally, he wrote down his answer: For drinking, washing, and cleaning.