The 'Doctor Web MD' parody video from College Humor is hilariously accurate. The premise of the video is essentially to make fun of all the people who use WebMD to diagnose their medical issues.
The doctor in question is Doctor Web MD who supposes that his client has cancer due to the fact that has has only one of the 14 symptoms that commonly occur. The patient, on the other hand, only has minor shin splints and while he tries to explain this, Doctor Web MD comes to the conclusion that it's AIDS. Essentially, College Humor is warning people against using WebMD for an accurate diagnosis.