@StarKing, if my vote matters. Don't change your name.
Also, I got all the kids at my school calling me TANK (well all the Brawl players in the lounge that think I'm a god lol). And at Melee tournaments and stuff of course. It is kind of weird when someone who knows your real name calls you buy your tag (when you're not at a smashfest or anything), but it happens all the time. I like TANK though so I just kind of chuckle. I also use the name TANK when I order coffee at Starbucks, or I'm at a deli or some place that asks your name.
Not that I play Brawl, go to Melee tourneys, or drink coffee at Starbucks...
@JimmyJoe, It's more at the end of the move's animation you input the next move to get it out the fastest possible. A bit different from the DK thing, but the window might be similar idk, although that's more like the shorthop thing. As in, if you let in go or don't hold it soon enough then it does the short one.