When you receive a Facebook message telling you of your "friends" birthdays and you suddenly realize you neither know or like these people so you "unfriend" them.
"Dude, I got a Facebook message today telling me about 27 peoples birthdays coming up this month who I fucking hate. So, I did some Birthday Cleaning. Happy birthday dicks!
by MattMat757 March 1, 2011
Get the Birthday Cleaningmug.