![Jay Leno's Book "Leading with My Chin", He is known for a prominent jaw, which has been described as mandibular prognathism. … | Leno, Stand up comedians, Hardcover Jay Leno's Book "Leading with My Chin", He is known for a prominent jaw, which has been described as mandibular prognathism. … | Leno, Stand up comedians, Hardcover](https://i.pinimg.com/originals/56/cc/6c/56cc6cdc86bff67cd1057fd29c48a4fa.jpg)
Jay Leno's Book "Leading with My Chin", He is known for a prominent jaw, which has been described as mandibular prognathism. … | Leno, Stand up comedians, Hardcover
![Jay Leno. Protruding Chin. Wears his hair with volume on top to help bring out the imaginary line from the forehead to the tip of… | Face shapes, Face profile, Face Jay Leno. Protruding Chin. Wears his hair with volume on top to help bring out the imaginary line from the forehead to the tip of… | Face shapes, Face profile, Face](https://i.pinimg.com/originals/c4/a0/6e/c4a06ec4f33cbc9feab32486d0d9670a.jpg)
Jay Leno. Protruding Chin. Wears his hair with volume on top to help bring out the imaginary line from the forehead to the tip of… | Face shapes, Face profile, Face
![TIL Jay Leno has Pathologic Mandibular Prognathism, a disfiguring genetic disorder where the lower jaw outgrows the upper, resulting in an extended chin and a cross bite. He is aware of surgery TIL Jay Leno has Pathologic Mandibular Prognathism, a disfiguring genetic disorder where the lower jaw outgrows the upper, resulting in an extended chin and a cross bite. He is aware of surgery](https://i.imgur.com/KR5j284.png)
TIL Jay Leno has Pathologic Mandibular Prognathism, a disfiguring genetic disorder where the lower jaw outgrows the upper, resulting in an extended chin and a cross bite. He is aware of surgery
![As Bristol Palin's jaw joins the chin hall of fame, we see how she'd look with other famous face shapes | Daily Mail Online As Bristol Palin's jaw joins the chin hall of fame, we see how she'd look with other famous face shapes | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2011/05/12/article-1386428-0C07ACE900000578-626_634x843.jpg)