When you wish happy birthday to mere acquaintances who are your friends on facebook solely because their birthday is shortly before yours. You do this because you want them to return the birthday wish and increase your birthday wall posts. If their birthday was any other time you would not even consider it.
Loser: Why didn't you wish me happy birthday yesterday? I wrote on your wall last week on your birthday.
Non-loser: I don't even know you loser, you were obviously just birthday wish fishing.