To expell gas from 2 orifices at once. Can result in an embarrassing situation possessing the guilty party with an overwhelming torque, causing a head-to-toe rotation. The moment of inertia can be calculated using standard equations and parameters:
I = mr^2
m is the mass,
and r is the (perpendicular) distance of the point mass to the axis of rotation.
A skydiver may borchelt, losing control of bodily functions in the middle of this unforgettable experience and flip in the sky, as if with no opposing force