About this one, I have completely no idea what it is.
All I know it is apparently named as Shimacchau Oji-san (しまっちゃうおじさん), which is from Bonobono (not this Bonobono :3) and this scene is a parody of this.
I... can't make out the context since I don't know Japanese. But as far as I can guess, probably it's Bonobono stepping on an ant and then... Shimacchau Oji-san punishing him this way?
Is it some kind of story to make them affraid when they do bad things maybe? Like Oni and stuff. Bonobono seems to keep imagining the consequences of his wrongdoing (didn't watch the whole video).