ur senses
it might be sick or in pain
It is called narcolepsy.
earthquakes
Not being able to control your body like that getting a "shake" could be an epileptic seizure indeed, but it could also be much more ;-)
I think its called Tourettes syndrome
It is not accurate to attribute someone's behavior or personality traits to a specific chromosome. Human behavior is influenced by a combination of genetic, environmental, and social factors.
the earths gravitiy causes it to push down
It means he's a jerk and should be avoided.
it would go slower and it might jerk
Because NO BODY LIKES YOU!!
The AC compressor puts quite a load on the engine, especially one with less cylinders. It puts a load on the engine, causing it to jerk back and forth.