Her: "My friend got me a drink but I don't know what it was. I think it had captain and coke. Do you know what that is?"
Bartender: "Yes, a captain and coke."
Her: "Okay! Can I have one of those?"
Five minutes later....
Her: "I can't taste any alcohol in here."
Bartender: "It's probably because you don't know what's in it."
