Logic Riddles

Question: Which thing that comes once in a year, twice in a week?

Question: You walk down a path through the woods everyday. You always walk by one particular large rotting log which weighs over a ton. The next day you notice that there is another large log underneath the familiar one that you've never seen before. How did it get there?

Question: Why is the man standing in the sink?

Question: Twelve pears hanging high, twelve men passing by. Each took a pear and left eleven hanging there. How can this be?

Question: Mom and Dad had four girls. Each girl had one brother. How many people are in the family?