I just tried Listerine for the first time. I remember when I was a kid we had something called 'Plax' that mum bought on special offer for a time and it was just like swilling your mouth out with something a bit minty.
However Listerine actually feels like it's burning away the inside of your mouth. Ouch. And wow. I'm either going to hate it or turn into some sort of Listerine dependent druggy, keeping a hip-flask on me at all times for a quick swig'n'swill.