How does a dentist know if you give head? is a question that has been asked by many people. There is no scientific evidence to support the claim that a dentist can tell if someone has given head, but there are some anecdotal reports that suggest that it may be possible.
One possible explanation is that dentists may be able to see signs of oral sex on the teeth and gums. For example, they may see bruising or swelling on the lips or gums, or they may see evidence of trauma to the teeth. Additionally, dentists may be able to smell the presence of semen in the mouth, which could be a sign that someone has recently given head.