I am a new railfan so I hope you won't mind this dumb question. In reading thru many of these posts I have seen the term foamer used several times. Just what exactly is a foamer? Thanks, Karl
http://en.wikipedia.org/wiki/Glossary_o ... minology#F
Surely you've met the kind of rabid railfan who can talk endlessly about the difference between the GP-40A and the GP-40C, including the number of rivets on its airbrake controls cover (the first has 5 per hinge and the second 7, which is the easiest way to tell the difference when they're passing you at 60MPH), who can't stop talking about trains long enough to take a full breath, or even to swallow excess saliva, so that the saliva starts to bubble out of his mouth, making it look like his mouth is foaming.
Did I mention that women never do this?