Well I know ur just trolling, but ur also describing mugging and jumping via surprise against unsuspecting ,likely untrained, people. U would be better off entering any fighting venue if you want to actually improve your ability to fight in terms beyond just sparring. Its far less criminal...and far more decent. Some of us come from the world you are joking about, been there. You are describing common thug tactic that is used against targets do to a self realized incompetence in relation to physical combat. Now I'm of the opinion you don't carry actions like those out, but if you do, well shame on you. Go learn to fight so you don't have to attack strangers from behind.
Is this post a criminal confession?
For whoso comes amongst many shall one day find that no one man is by so far the mightiest of all.