I don’t know the context of this video, but in it, Gary Busey threatens to rip out someone’s endocrine system and then dons a straitjacket and yells incoherently at the camera.
I would assume they were filming something that plays off Busey’s reputation as a madman. Either that or it was Friday. Everyone knows Friday’s are Straitjacket Day at Busey’s house. Straitjacket Day comes right after Machetes and Afro Wigs Day.