User-Activated Cell Phone Ring

Ever have this happen to you? You find yourself talking to an obnoxious person. Words are coming out of their mouth like a machine gun. As you fake a smile, you look around; there's no way to escape. No excuse to say, "I hate to interrupt this stimulating conversation. Let's continue it later shall we?"

Wouldn't it be so much easier if your cell phone rang super loudly right at that moment?

So here's the invention: A little ringer that you attach to your cell phone. Secretively, you put your hand in your pocket and activate the ringer. It's super loud. Loud enough to stop a blabbermouth dead in his tracks.

"I'm so sorry," you say, "but I have to take this call. It's from my mom."