A brunette, redhead, and a blonde go into a bar. The brunette says to the barkeep, "I'd like a BL."
The bartender replies, "What's a BL?"
The brunette answers in a snotty voice, "A Bud Light. DUH!"
So, the bartender dutifully serves up a Bud Light.
Then, the redhead says, "I'd like an ML."
The bartender asks, "What's an ML?"
The redhead answers, as if to a slow child, "Miller Lite. DUH!"
After serving the redhead, the bartender, now wary and on alert, turns to the blonde.
She says, "I'd like a fifteen, please."
The bartender thinks and then says, "Okay, I understand that a BL is a Bud Light and an ML is a Miller Lite. But, I can't figure out what a fifteen is."
The blonde rolls her eyes, tosses her hair and answers, "A Seven and Seven. DUH!"