noun: most commonly known as Music (of time or music) having two beats in a bar. More accurate definition is that of a sexually suggestive term used to break the ice in awkward situations, such as in band class. See examples below.
Teacher - "So who wants the solo?"
Student - "Nick, I can see your duples."
(note: the name Nick carries no significance, in this case it is simply a randomly generated name to convey the appropriate message to define said word)