Well, I just want to let some steam out...
I put my Tamron lens up for sale a few weeks back. Several people called, including this woman who offered me $50 less than what I asked (and I priced it to sell). I politely told her the lens was worth more. She says it's a gift from her boyfriend and she has to get his OK before spending this kind of money, then disappears. (Accidentally I had another girl call with almost the same exact story ).
A day or two later, I sell the lens for the full asking price. Three days after that, I get a call from that girl who tells me she's got the extra $50. Upon hearing that the lens has been sold, she sort of gasps for air for a sec, then accuses me of (1) lying to her (2) getting her in trouble (3) being a dishonest lying f#ck... at which point I told her to get lost and hung up.
Now, this is not a 5 years old - she's at least in her mid-20s and sounds as a fairly well educated person... WTF with that "You owe me" attitude ?!
A good lesson - never give anyone your phone # when selling on Craigslist, tell them to email only.