(Noun) The sexual act of shoving a banana inside a woman's wet vagina, then twisting the banana and pushing it in and pulling it out as if you were fucking her. Then after 5 minutes, you take the banana out and eat it.
Randy: Dude, that strip club was awesome!
Billy Bob: I know, I got a boner!
Randy: Well, then let's do something about it!
Billy Bob: What?
Randy: Go get a hooker and do a banana creamer!
Billy Bob: What the fuck is a banana creamer?
Randy: Just fuck her with a banana and eat it.
Billy Bob: Sick! Let's do it!