Mine definitively states that I am not, in fact, Elvis.
Of course, I'm not quite a number of other people as well.
Anyway, I got it from this old game that I think came out in the 486/early-Pentium days called Worms. Basically teams of earthworms, in a turn-based system, use absurdly heavy weaponry in an attempt to kill everyone else on all other teams. Much terraforming occurs as a side-effect.
You could give the worms names, and have team-names. There were several voice-pack files, including SoulMen (the worms all sound like James Brown), BeavButt (Beavis and Butt-Head voices), Scots (exaggerated Scottish accents), Python (lines from Monty Python), and numerous others... including NotElvis, which in fact makes all of them sound JUST like Elvis Presley.
So, I stole if from there. Plus, I admit, when someone asks who I am, I love telling them that I'm "not Elvis".
As a side-note: I took an IQ test once, and, like MissChievous, came up as having an IQ of 147. I don't know if there's any significance to that or not.
Which is 1 point less than Nimrod's 148. I don't know if there's any significance to that, either.
EDIT: In addition, while I thought I was the only person using the NotElvis moniker, well, it turns out that for email purposes, somebody already took
[email protected] . . weird . . so I had to use notelvisjr for that.
Strangely, when I tried to email
[email protected], it says the account doesn't exist. Yet I can't create it, either.