We can’t tell you for sure, since Jack Houston’s 1952 novel Waiting for Willy dates from well before were born, but we suspect “willy” was a slang term for penis even back then. We think so only because we keep finding what we thought were contemporary slang terms in these old books. We wish we’d thought before now to make a list. You’d be surprised. Apart from some hip-hop expressions—and even including many of those—the slang already existed and was used in the same context. Of course, authors often borrowed terminology from early- and mid-century African American vernacular, which makes the whole process circular, sort of. We’ll wait for a comprehensive study on the subject from you linguists out there, and as the cover shows, anticipation is the best part. The art on this is by George Erickson, who you can see more of by clicking his keywords below.
It's about time you got here Clarence Joe—I'm like to die of desperation.