Two encounters, both game-related. First, a person with the username Kioshi had made a channel announcement of some sort, I can't remember. No less, I'm sure everyone knows who I thought of.
Second time was while I was playing Combat Arms, and with only three people alive in the mission, someone typed "And then there were three". Doubtless to say, I, for some reason, actually replied "I just thought of Flandre Scarlet, and that one book". :V