At this point, common sense dictates that Wu-Tang Clan ain't nothing to f--k with, but one fan had to learn that lesson the hard way last week during a Wu event.

Ghostface Killah and Raekwon appeared at a small event in Texas, but one fan in the crowd just couldn't control himself while they were on stage.

In a 50-second video clip, we see an extremely irritated Ghostface telling the rest of the audience that this detractor had been, "giving me the middle finger all night, telling me to eat a d--k," and the response was instantaneous.

He didn't even need to touch the annoying man since the crowd rushed to his defense, shoving and punching him until security escorted him out.

Don't let this happen to you.