How the heck do those kids say "my dad says sorry bastards always talk a lot" while constantly talking on and on and not realize they're calling themselves dumb?
@GoblinGuy That also threw me off. The line was repeated later by one of the twins so it might have been placed in the brats speech bubble by accident.
@lazytyke I think it's more something that the author intended in order for us to see that they are only dumb brat who only repeat what their parent say without even thinking about it ^^'. I suppose we should then only treat them as brat and not as bad character.