Duh!
A redhead walks into a bar. She walks up to the bartender and
says, "I'd like an RW, please."
The bartender says, "what's an RW, might I inquire?"
"Red wine, duh!" The bartender serves her her drink.
A brunette walks into the bar.
"I'd like a WW, please."
"A WW is . . . what?"
"White wine, duh!" The bartender serves her drink.
In walks a blonde.
"I'd like a fifteen, please."
"What in the world is a fifteen?"
"Seven and seven, duh!"