Few realize that the lift resulting from a fart puts undue pressure upon the
sphincter.
One must not forget the extra energy garnered from the convergent/divergent
airflow across the sphincter. Is mass conserved in this case?



"Nav" wrote in message
...


The Professor wrote:


What happens when , at low airspeed, one injects air into the airflow?


Depends on injection flow rate and position doesn't it? If it's a fart
people may complain.

Cheers