A little girl asks her Mum, "Mummy, may I take the dog for a walk around the block?"
Mom says, "The dog is in heat, go ask daddy."
The little girl goes to her father, "Dad, can I take Susie for a walk around the block? Mom said the dog is in heat and that I should ask you."
"Hm." He answers, takes a rag, soaks it with gasoline, and scrubs the dog's butt with it. "OK, you can go now but keep Susie on the leash."
The little girl goes and returns a few minutes later with no dog on the leash.
Dad asks, "Where is Susie?"
Little girl says, "Susie ran out of gas about halfway down the block - but another dog is pushing her home!"
