That's a great way to damage your guitar and make it look really stupid also. And then later on you're going to wonder, why the hell did I do such a stupid thing? Especially when you realize you won't be able to put regular strap buttons or strap locks ever again.....oops, all of a sudden your guitar is ridiculous AND has no resale value.
score another one for "looking cool" vs. practicality and as a replacement for regular practice.
if you want to make the guitar look extra dumb, make sure you sling it low between your knees too. Might be able to damage your wrist at the same time.
I'm not trying to be an arse, really, but some stuff just bugs me.