Birthday Cake, another song from Rihanna’s “Talk That Talk” album, is another sex song. If you really thought, she was talking about birthday cake, go run into a cactus. This long, gone good girl is talking about how she is receiving sex that can be equivalent to the sex people receive on their birthday, which is supposed to be mind-blowing. Her man wants that “cake” and is well at “lick[ing] the icing off” and eating the cake.