Logic Riddles

Question: Every time you lose something, you always find it in the very last place you would look.

Why is this?

Question: Why would a hair stylist rather cut the hair of two brunettes than one red head?

Question: What is the best way to stop a dog from barking in, and digging up the front yard?

Question: During what month do people sleep the least?

Question: When is homework not homework?