First of all, hello, I'm a "n00b" in here but I've been into MBTI for some time now.
Second of all, flirting. Quite frankly, I suck at it. I can only flirt with a girl when I know her personally and when I know that I do not want anything more than just friendship or whatever. But usually that's more of an "exchange of wittiness" rather than actual flirting.