@jsr it was Summer of Sex Number, though, as much as it was about the particular year, or at least Adams was willing to express shtick to that effect:
"Adams found the title intriguing;[13] although it suggests a specific timeframe, he asserted that the number was a metaphor for coming of age rather than a strictly personal timeline.[14] Adams later revealed that the number 69 was also intended as a sexual double entendre."