More of a pun than a rebus...if this were Wheel of Fortune, it would be "Before and After"

Hint on this one: I had to edit the post because I had originally drawn it with two humps, but one hump is more appropriate. Also, I've been told that even though it works spelling-wise, saying it out loud required mispronunciation of two words. But I had always pronounced those words in a different way, so it's not an unnatural pronunciation.