Throw in some subtle nuance in the delivery, and I’ve done similar to basically call someone a jackass to their face.
For a rough example - attending a kids birthday party in the presence of racist ex-inlaws. Somebody says something predictably racist, I say something obnoxious which on the surface sounds like I might agree with them for half a second, then the realization hits that I was making fun of them and I roll my eyes and walk away.
Before reading your comment I’d seen the image, laughed, and showed it to my adult son who also snickered. I then told him if he and his brothers don’t do something similar when I’m gone, I’ll be terribly disappointed.
Everyone has different comfort levels with death. I work in hospice so I see death regularly, and am about as comfortable as I can be with the idea. I hope my son’s can be as comfortable too. We’re very loving, but share similar sense of humor.