David After Dentist is an Internet phenomenon which started when David DeVore Jr.'s father posted a video on the Internet of his reaction to anesthesia after he had been given oral surgery. As of 8 September 2022, it has been viewed 141 million times on YouTube.

In May 2008, 7-year-old David DeVore Jr. was taken to the dentist to have an extra tooth removed, due to a hereditary condition called hyperdontia. Because this was David's first surgery and his mother could not be there, his father decided to videotape the experience to share with her and their family.

After the surgery, David was feeling confused from the anaesthesia he was given. While in the car, he was asking his father questions like "Is this real life?" and "Is this going to be forever?" and also telling him that he had two fingers. At one point, he famously attempted to push himself up from his seat (while still buckled in) and began screaming before sinking back in exhaustion.

Seven months later, David's father uploaded the video on Facebook. Being overwhelmed with people wanting to see the video, he decided to upload it to YouTube, but did not notice there was a private option. Just 3 days after the upload, it had been seen over 3 million times.

The DeVore family were soon made YouTube Partners. This gives YouTube the right to run ads over the videos they post, and in exchange, are given a share of the revenue. They also sell "David After Dentist" T-shirts and donate a portion of the revenue they earn to dental charities.

In May 2021, the DeVore family created an auction for a "David After Dentist" NFT, with the profits going toward David and his brother's college tuitions.The NFT sold for around $13,500.