I went to his room and saw him standing at his wall, near a haphazard placement of stickers he'd put up yesterday. I calmly asked, "What did you just say?"
WHM: Sorry, Mommy.
Me: Okay, but what did you say?
WHM: Stupid jackasses.
Me: That's not a nice thing to say, buddy. Don't say that again. Why did you say that?
WHM: Because these stupid stickers won't stick to my wall!!