Sorry no pictures - this happened back when I was a teen.
We were having company over, so I had spent all day cleaning up all the animal cages so they would be picture perfect. This included the rabbit cages outside.
Apparently I did not wash up well enough after cleaning the rabbit cages.
Company arrived and wanted to see my Burmese Pythons. After assuring them that they were safe and did not bite, I opened the middle cage of a large 3 tiered cage that housed an 8 foot burm.
The burm smelled rabbit and he was hungry. Within seconds - he struck and bit me, on the face. His upper teeth were embedded above my eyebrows and his lower teeth were embedded below my lower lip.
Fortunately he was not succesful at constriction - he tried to draw my head into his cage but didn't have the strength, and then figured out I wasn't a rabbit. Getting him off was tricky, as I didn't want to injur his teeth or jaw, but once we had his upper jaw removed from his face, the lower jaw just came right off.
I guess those guests learned that even "tame" burms can be dangerous. And I had a hell of a time at school the next day with python bite marks all over my face. 
We fed the snake the next day - as clearly, he was hungry.