Zuri has potty mouth

Today, ayi was vacuuming and Zuri couldn't hear the TV and he started yelling, "AYI! SHUT UP! SHUT UP!" and when she didn't understand him, he went to her and pulled her around to face him, "SHUT UP!" This is funny as I type it, but it's NOT really funny because A. I have no idea how he learned it and B. it's freakin' rude!