He's explaining how the "joaquininha" must be well done. The sound in my PC works off and I can not listen to it. But I remember he has said that he practices in the trainings and that move comes to the mind when you're playing and must be done fast. Joaquin said he has done "joaquiniha" a few times in games because it's dangeorus and he doesn't want to break his knee
The following images are from other players that made famous a dribbling, moving or skill.