We've never told Lyn that I am the one who gets the Santa videos done for her. The email alerting her to the presence of the video doesn't even come from me. It comes from the Portable North Pole. When she tells me about the video each year, I play along like I don't know anything about it.
Today, she started to tell her neighbor about the video from Santa. When she started her tale, she led with "My sister does this for me." Mom's jaw dropped. Lyn started talking about the video and Santa, never mentioning me again.
Sometimes, she leaves me shaking my head.