"never ever ever ever"

At some point months ago C picked up a new saying.  If she gets mad at someone she says, "then I'm never ever ever ever going to be your best friend or never ever ever ever ever going to play with you."  She can be truly nasty when she wants to be.  We don't like her saying this.  It's just not nice but we really haven't been able to stop it.  So guess what E is now saying, "never ever ever ever."  That's all he says and he doesn't even really know what he is saying all he knows is I HATE when he says it so then he says it more and laughs.  Again I say he is bad!!!!  He also says, "don't say that" in a nasty tone bc he is so used to me telling C that.  He uses that phrase correctly though breaking it out when his sisters or I tell him something he is not happy about.  He is something else.