An elderly lady offered to watch her neighbors dog while neighbors went on vacation.
The problem was that the spinsters own dog was in 'heat' and the neighbors dog was a male. Nevertheless she had a large house and was able to keep the two dogs apart.
As she lay in her bed drifting off to sleep that evening she was suddenly awakened by howling and moaning sounds from downstairs. she rushed down to find the dogs locked together, and unable to disengage.
Try as she might she could not part them and became perplexed as what to do next.
Though it was late she reluctantly phoned her vet and after a few rings the rather grumpy voice of the vet answered the phone.
After the spinster explained the problem, The vet said. "I want you to take the phone to the dogs and place it down alongside them. I will then phone your number back and the telephone ringing noise should make the male dog lose his erection and be able to withdraw.."
"Oh" Said the spinster. "Do you think that will work?"
"Well" The vet replied, "IT JUST WORKED ON ME!"