A plane is on its way to Melbourne when a woman in economy walks past to a spare seat in first class and sits down.
The flight attendant tells the woman she will have to return to economy, but she refuses. "I'm blonde, I'm beautiful, I'm going to Melbourne and I'm staying here!"
The attendant goes to the cockpit and tells the pilot and copilot what happened, so the copilot goes back and asks the passenger to return to her seat. Again, the woman replies, "I'm blonde, I'm beautiful, I'm going to Melbourne and I'm staying here!"
Exasperated, the copilot tells the pilot. "I'll handle this," says the pilot. "I speak 'blonde', I'm married to one."
He walks to the woman in first class, sits down and whispers in her ear.
"Oh, I'm sorry." she says, "I had no idea."
The attendant and copilot are amazed. "What did you say to her?" they ask.
"I told her that first class isn't going to Melbourne.