Look, Jake, normal human beings didn't grab people when they were tear gassed, at best they kind of cried and maybe rolled around a little on the floor GOD why couldn't you be normal for once instead of a big slab of beef jerky.

Heiji didn't have a noodly Hershel gentleman wrist, but this still a) came as a surprise, and b) hurt, enough that he temporarily forgot that he wasn't allowed to talk. "Ow! Chill out, I'm just tryin' to --"

Well, that was a mistake. The bracelet gave him another painful shock at once, and because Jake was currently (heh heh) holding his wrist, guess who was also getting electrocuted?