Do you use the pitcher rinser?

You know, the little thing with a grate (usually) and a drain that you press down on and it shoots water up and outward? I’ve been catching flak for using it, which I don’t understand, because that’s what it’s there for.

Basically, whenever a customer is bothering me or standing too close, I just give that thing a little press and spray them with water like a cat and usually they back the fuck up.

But my manager says that I shouldn’t be using it like that. What do you all think?