personal favorite of mine from about a year back -

Villain, after several harsh sentences (i did suck out on him cause i was a calling station, but he was still bad) says
"give me my money back"
me: How...?
Vil: "transfer it back now"
me: uh, no - lol
Vil: I'm going to send you a virus if you don't
me: I hope your better at programming than poker - lol