http://www.mangago.zone/read-manga/obey_me/nto/to_chapter-13/32/ What the hell is that...

Idk bet he was on acid lmao

My thoughts were on that scene is that the static and blank boxes are used to show that he is having a hard time remembering that point in time and what was exactly spoken. In my opinion, he seems to have either focused so much on a single thing, such as the fact that he was bullied in school, that he is having a hard time remembering anything else or he has some other memory problem.