no disrespect to aikido,but i went to a aikido school to check it out cause my buddy kept bragging about it,anyway i was a white belt in bjj at the time from renzo gracie academy in nyc.i started out just watching the class,then my buddy starts telling the teacher im a bjj expert,lol.i was and still am far from a expert,anyway the teacher starts degrading bjj saying its not practical in real combat and stuff.anyway after awhile he invites me on the mat to demonstrate how great his art was and how crappy mine was.make a long story short i got a single on him and he went down quicker then youd believe,as im starting to gain side control hes telling me real low in a wispering voice to extend my wrist to him.i ignored him and got full mount and he extended his right arm to try and grab my wrist and i armbarred him in less then 2 minutes.he got up pissed off and told the class he wanted to let me do that to him so he could show them where i was making mistakes,lol.i was respectful to the guy cause renzo always teaches us to be humble and freindly to everyone,5 of his students followed me outside after class,at first i thought they wanted trouble but they actually wanted renzos adress in nyc to the academy,lol.i never went there to try and show the teacher up,he called me out and it just happened on that day i got the better of him,who knows,maybe i just got lucky