On Thu, 27 May 2010 08:15:24 BST, Bob Martin wrote:

Not related to OP's question but why do some people feel it necessary to turn off
taps with as much strength as they can muster?
I'm constantly demonstrating how little effort is required to stop the flow.

One very good reason would be if the rubber washer is damaged, has a bit of
grit in it, or is starting to split. Then more force is needed to stem the flow.
JPresuming the individual involved doesn't want to repair/replace it.