What is a dilemma?

Two men are having a drink in a bar. One says: "You know, I've never really understood what a dilemma is..."
"Let me tell you a story," says the other man, "Imagine you wake up in a bed with two people next to you. To your left is an incredibly beautiful woman willing and to your right is a gay man."
"So where's the dilemma?" replies the first man.
"To whom do you turn your back?"

LoL