Is there an app I can choose my own number?

Is there an app where I can pick my own number? Because, seriously, how cool would that be?! I mean, imagine – picking your own phone number! This "Burner" app... is that for real? It sounds exactly like what I've been needing. Like, for ages! I always get a little freaked out giving my real number out for stuff like online dating (which I've dabbled in, let's be honest) or when I'm selling that old furniture on Craigslist. You know? It's just... too much. The idea of having a number I can just poof delete when I'm done? Genius! It's like a secret identity for my phone. Seriously, the peace of mind alone is worth it, right? I'm totally downloading this thing, like, right now. I'm thinking maybe ending in "777"? Lucky! Okay, gotta go check it out!