Yeti
From Omnictionary
Defined by John at the Paper Towns signing in Indianapolis as his "manic pixie dream girl."
A yeti is a mythological apelike creature said to inhabit the Himalayas.
The Yeti (note the capital Y) is an awesome creature that is rarely seen on camera. As well as being "The Yeti", it is also known as Sarah Green, curator and wife of John Green. Little is known about the Yeti, because she has never been featured in a video (apart from her voice or a hand). John has stated that he doesn't allow her to be in videos because he is "afraid her cute might break the camera". John Green has also noted that The Yeti looks like a kitten wrestling a rainbow when asked to describe the elusive character. Note, The Yeti is NOT a myth; Spiderman and Canada are.
Sightings
The Yeti's laughter can be heard in several videos, the most notable being the punishment in which John must eat a blenderized Happy Meal; August 14th: The Blenderized Happy Meal (and Leg Waxing), John receives the sympathy of the Yeti when he is forced to wax his chin and it bleeds. Her hand is clearly visible in the video where John is in the hospital for his orbital cellulitis March 26th: Thanks, and she provided the voice for one of the scavenger hunt videos. The Yeti's legs and very cute heels can be seen in the video "Don't suck that bone" from June 26th, 2008, she also speaks
Four pictures of the Yeti are known to exist: one here http://www.sparksflyup.com/uploaded_images/SnJGreen2-711277.jpg, one one here http://www.sparksflyup.com/uploaded_images/SnJGreen1-709355.jpg, and two pictures here http://photos.indystar.com/galleries/10840
The Yeti was caught on tape briefly at one of John's speaking engagements in Minnetonka, Minnesota, on September 27, 2008. She can be seen at 4:13 in this video.
- See Gospel according to John for more
The Yeti can be seen in photos 8 and 12 of this gallery: http://photos.indystar.com/galleries/10840
More
The Yeti's voice can be heard commenting sometimes, having rated the pain of leg waxing for John. A '5', for those interested. Her laughter can be heard as well during John's musical happy dance in Stockholm, Sweden, it is believed.

