Rudy Mancuso I'm Totally Killing it on Vine ... Without Even Trying

11/20/2013 4:20 PM PST

Millions and millions of people are addicted ... to Rudy Mancuso's 6-second video clips on Vine -- and it's turned him into a bonafide Internet superstar.

Best of all ... dude just doesn't give a crap, and that -- he claims -- is the key to his success.