In Margaret Atwood's novel "Oryx and Crake," the metaphor comparing sex to drinking suggests that overthinking or obsessing about sexual matters can be detrimental, much like indulging in alcohol too early can lead to poor judgment. This indicates that some topics are better left unexamined until the appropriate time, promoting a notion of moderation and mindfulness regarding both desires and actions.

The quote also implies that the excitement surrounding sexuality can distract from more pressing realities if given too much attention. Atwood encourages a balanced perspective, illustrating that while sexuality is a natural part of life, it is essential to approach it with awareness and not let it dominate one's thoughts, especially at inappropriate times.