5.3.... Are you kidding me? Better than that if you get the references.

Rating: 8/10 (27 September 2015)

Humor is subjective, but to me this movie is both fun and funny. Not to mention a great tribute/parody on the karate flicks, primarily Enter the Dragon, that it mimics. I often use it to lighten a bad mood.
I think part of the reason it's rated so low is that a lot of viewers may not be familiar with the old-school martial arts films and not get the premise, and/or the references. If you don't, I can imagine a lot of the humor whizzing right past you.
Let's put it another way. If you don't think the idea of a ping-pong underworld and ping-pong death matches is funny, you may not like the movie. If you do, watch. I think Dan Fogler is brilliant, as are nearly all the bit players.
It's over the top, but in a friendly sort of fashion. Don't dismiss it because of the low rating.