I've not had it done to me by anyone else, as far as I can remember. I do know that if I'm with my friends and we're having a not-very-serious discussion, I'd often ask some random stranger for their opinion.

One time in college, a girl I lent my stapler to said, "Who brings a stapler with them to the computer labs?" At which point I borrowed as many staplers in the room that I could (No, it's not for stapling anything, it's to illustrate a point) and showed them all to her.

Then we introduced ourselves.