Turn ons: Sarcasm

On browsing thru the orkut profile of most of my friends, acquaintances, friends of friends and so on, I often notice that sarcasm supposedly turns people on. And these are the very same people who will make caustic remarks if you use a little sarcastic humor on them. Do they not understand what sarcasm means or are they in the dark about what "turn ons" imply. It could be an unending debate on whether we share the same perception of sarcasm or is my brand a little too strong for them.
I'm also a little confused as to the type of turn on it is. If a guy is sarcastic with another guy (assume neither is gay), how does it turn on the recipient? The same for girls. And what is it supposed to imply to a general reader of the profile. If he/she leaves you a sarcastic scrap will you be miffed or turned on?
Then there is the brood that says it is turned on by flirting and the about me reads "If you don't know me please don't scrap". So is this like flirting self-help group where you cant participate if you don't enroll first?
The list goes on. But esentially, you get the point. Think before you tell people what turns you on.