A person who you are only planning to date for some specific purpose, I.e. to make someone else jealous, then you will ditch them when you no longer have a use for them. The term comes from people who purchase big, expensive televisions from Best Buy before their Superbowl parties, then return the televisions and get their money back.
John kept wanting to meet Luanne at the restaurant where his ex worked, making her wonder if he was just Best Buy dating her.
by WineAndPasta April 12, 2016