where did she learn that

Sweet Pea was on the phone with my mom earlier today (yes, I was eavesdropping to be sure the conversation was appropriate). Sweet Pea was attempting to tell my mom about her tongue injury- she fell while dancing in the bathroom and bit through her tongue on each side. My mom was having a hard time understanding this story and was asking Sweet Pea what she said. Sweet Pea became aggravated and said, "Just forget about it." My mom insisted again that she wanted to hear the story; Sweet Pea again stated, "I said just forget about it." I promise that I don't recall saying this to either of my children but it is possible!