I had locked my bike up one day last year, came back a couple of hrs later and the front tire was flat, didn't have a wrench or a tube for some reason so I ended up walking home with a seat and a front wheel. Needless to say I got a bunch of wierd looks.
the other day when I locked up downtown to go the library(MLK) I came out and there were two guys standing right next to my bike, they seemed to be trying to work out their game plan as I saw a lot of sawing motions as I was walking to my bike. I just unlocked got on and rode away. as I was leaving one of them said "hey thats a pretty nice bike you got there" that scared me into a bigger lock