the.com/jaw

the only bone you can dislocate just by yawning too hard at a party

means The hinged bone structure of the mouth that holds your teeth and lets you chew, talk, and bite — or, as a verb, to talk on and on.

from From Middle English 'jowe' or 'jawe,' which likely came through Old French 'joue' meaning 'cheek.' The deeper roots are murky and debated, but it eventually edged out the older English word for the same thing, 'chaft.' The chatty sense — 'to jaw at someone' — is a much later figurative leap, the idea being that all that talking is just your jaw flapping.

bite force
masseter muscle clamps with over 200 pounds of pressure
strongest muscle
the masseter is the body's most powerful by weight
only mover
the lower jaw is your skull's sole moving bone
first impression
a strong jawline signals testosterone and bone health
yawn risk
can lock open from overstretching, requiring a doctor
for instance

great white shark jaw — can exert 4,000 psi of bite force, largest predatory fish teeth

hippopotamus jaw — opens 150 degrees wide, kills ~500 people annually in africa

mantis shrimp raptorial claw — strikes with force of .22 caliber bullet, fastest predatory appendage

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