I've already found that folding bicycles are not for shy people - people notice them and they talk to you. Yesterday, I got two comments I enjoyed:
As I was folding at the Metro yesterday morning, a woman comes up to me and says: "Cool bike. Does it have a motor?" I'm all sweaty from my ride from home to the station, and I reply, "Yep - me ... I'm the motor." She smiled and wished me a good day.
I was waiting for the elevator to head home with my folded and bagged bike on my shoulder after work yesterday. When the elevator opened, one of my co-workers from downstairs came out. He looks at the bike and says, "What happened to your bike? Did you have an accident?" The bike pokes out the top of the Ikea bag, and I admit that it looks like an odd collection of bicycle parts, if you don't know that it's a folder.

Anybody else get some funny comments like these?