Hi, my friend has been an aggressive man since he was in elementary school. Infact, he was the class bully. In highschool, he is still the bully, the guy who walk around with 5 big guys and going around acting tough. He recently joined the kyokushin karate club and he is really doing well. Hes around 6 feet 5 and he has been doing weight lifting since elementary school(father is a ex national weight lifter i heard). I told him i am in the taekwondo club and those high kicks and jumping spinning kick is extremely good. Well, he told me he is going to come to the taekwondo club to beat up my instructor and he told me to tell my 5 feet instructor to get ready. He has never lost a full contact sparring session in the club since hes the biggest and toughest guy in school. Just my thoughts, what should i do? He doesn't seem to be joking. I think he is over obsessed with his tough guy image and he needs to soften up abit. Do you think my instructor should accept his challenge or just call the cops(laughs)? My question is, is it ok to walk into a dojang and challenge the master like those old school movies? Thoughts and comments?