On Monday, May 25, 2015 at 4:01:59 PM UTC-6, wrote:
Oren:

(Kmanrocks puts on his best full metal jacket)...

PRIVATE PYLE, YOU JUST LIKE TO BE
DIFFERENT!!!

The instruction manual for the Haywards,
at least, says that DAMAGE CAN RESULT
from moving the valve selector while the
pump is ON, under pressure of water passing
through it.

Why do IDIOTS always have to challenge and
refute everything I say on Usenet??

The term "full metal jacket" refers to a bullet's casing. It has nothing to do with the guy's jacket. (lol)