Santa Discovery

My friend Charlotte just wrote a really funny blog about how her little brother's comments about Santa and asked how other people discovered that Santa isn't real. I don't remember exactly how old I was, but I was already suspecting my parents from things like Santa's handwriting being exactly like my mom's.
Then one day shortly after Christmas I was over at my friend Karen's house wearing the sweatshirt Santa had given me with big Teddy Bear painted on it. Karen's mom said to me, "oh cute, I remember your mom making that sweatshirt!" My face kind of fell and I mumbled, "Santa gave it to me." Then I knew.