Real definition of vampires: Eastern European men wearing capes who drain your body of its fluid, which they will then use for sustenance.
No matter what Mark Wahlberg tells you, this is not a good idea. ESPECIALLY if you do not know the man or woman sitting next you. That said, if you do decide to surprise your coaster-mate, try to time it forwhen the picture is taken. "Ten bucks well spent." That is what you'll be saying when you purchase your new mantlepiece.
I don't know about you, but I've had sex at least eight times and each time is more awkward than the next. I don't know how to explain that I don't know how to properly put on a condom, I don't know what conversation to make in the middle, and I'm always left washing my sheets and wondering why I was talking so much during the whole thing -- The fact is, Hollywood depicts sex in a way where girls' bras come off by winking at her and there's no clean up whatsoever. And if we're being honest, the clean up is the moment where you really make a connection with someone. Without that, sex is just a fun, guilt-free experience, in which you don't feel terrible about yourself. And isn't that moment of shared self-hatred is what we're all striving for in the first place?