Long story short...Our bikes were stolen several months back and I decided to "put together" a couple of bikes inexpensively. I'd never heard the term "Rat Rod" referring to bicycles but I guess that's what I was "putting together". I stumbled upon this site and was absolutely BLOWN AWAY by the beauty, artistry, and ingenuity of the bikes you guys are rolling around on!! I'm a total novice bicycle mechanic but have managed to put together several bikes to replace our family's stolen rides: a 1992 GT Pro Series BMX bike for my son, a 1961 Schwinn Traveler "Rat" bike with a two speed kickback hub and ape hangars for my wife, and a "klunker" style cruiser for me. I'm having a great time learning about vintage bikes and mechanics and getting tons of inspiration an creative ideas from your site. Learning my way around! Can somebody tell me what "bump" means in the forum posts?? I don't get it!