A man went into the proctologist's office for his first exam. The doctor told him to have a seat. In the examination room and that he would be with him in just a few minutes. When the man sat down and began observing the tools he noticed there were three items on a stand next to the exam table: A tube of K-Y jelly, A rubber glove and a beer.
When the doctor finally came in the man said, "Look Doc, I'm a little confused. This is my first exam. I know what the K-Y is for, and I know what the glove is for, but can you tell me what the BEER is for?"©JOKEDEMO.COM

At that the doctor became noticeably outraged and stormed over to the the door. The doc flung the door open and yelled, "Nurse! I said a butt light!"