Ive been to alot of car shows, no offense here either. but never ever ever never ever touch some ones rig without permission.... lol.. the owner is always with in view and most owners,, if you get thier attention in some other way,,,they will gladly give you a closer look..
And to answer your Q: its called taking pride in their car. like tony said. touching dry paint is like applying fine sand paper to his paint and he also has no idea what your doing under his hood. he may not have recognized you and just saw someone touching it and went defense mode on you..
