put a message next to those belts saying "thats so demonic friends" or something equally not funny or retarded anybody can post belts
how about he post some video or pictures of him competing at a tournament. if he is a brown belt he would have had to have competed dozens of times. the fact that he wont say what gym he trains at is another definite sign that he is lying. everyone ive ever met who trained was really proud of the gym they go to.