[NSFW] A man enters a bar...

And he asks the bartender for a Rum and Coke. The bartender hands him an apple. Confused, the man asks, "I thought I asked for a Rum and Coke?!" Bartender replies, "just try it". The man then says, "wow, this tastes like rum!". Bartender replies, "turn it around". So he does, "wow, this side tastes like coke!".

Another man comes in and asks for a Gin and Tonic. Same happens, he gets an apple. "I thought I asked for a Gin and Tonic". Bartender replies, "eat the apple". "Wow, tastes like Gin!" the man replies. "Turn it around". So the man does, "this side tastes like Tonic! Awesome!"

Finally, a third man enters the bar, and the two guys tell the third man about the apples that taste like whatever he wants. So the man says "Do you have one that tastes like pussy?". Sure enough, bartender supplies. The man replies, "Aww, this tastes like shit!!"

"Turn it around", replies the bartender.

EDIT: Fixed an error.