[gaijin]

It's kid of like in anti-submarine warfare, right? When one sub is looking for another one amidst a whole lot of ocean, he lets out a PING.

The ping reflects off the other guy, telling guy 1 where guy 2 is, and vice-versa.

[JustaDumbBlonde]

You just reminded me that I need to watch The Hunt for Red October again. Thanks.

[GVNR]

Hey, I ate beans one night and let out a "ping" in the bathroom and the wife yelled "use the spray"..is that the kind of ping you're talking about?