A swollen abdomen similar in appearance to a beer gut, but caused not by excess calories, but a buildup of scar tissue from years of absorbing violent blows in karate.
"Wow, sensei must really be knocking back the beers. Look at that beer gut!" "No, thats karate gut. It's all scar tissue from taking so many karate kicks. He's such a badass!"
by TheMadLinguist January 20, 2009