This may be more true in tech circles, especially because everyone wants to compare themselves to big hits (Dropbox, Facebook, Google). It's less common in other sectors.

And if you are going to try it, test it first. Use your little catchphrase and then ask your friend what they think that means you do - 'Dropbox for Hackers' doesn't necessarily mean "code sharing that just works" - it could be interpreted as "making your private code accessible by our internal team" or "yay - unexplained conflict errors all over the place".