Need help please.

I'm buying an mflb and I need to think of an excuse for spending 100$ on the internet and why i received a package in the mail. My parents are smart people and I also have a bank account under theirs so they can see what I'm spending. Since I'm buying from the Ent super center I know it will show up as something else but i still worry that when they google it, it will still show the ent super center. My idea so far is secret Santa, "I got matched with two different people who didn't get gifts" other then that I havent thought too deeply into it.