I was watching this video but i couldn't make up my mind what exactly was going on.
Only part that was translated/made sense was this comment
Time to put my unused Japanese degree to use! :-P Matsumoto said he can't do it because children might try to imitate him. The white caption at the bottom (intermittently from 7:50 on) says, "To all the kids sitting in front of the TV, please do NOT try this at home - it is dangerous," which he points to during his explanation.

Has this been subtitled before?