While sex is one of our basic needs, the diversity of reasons to engage in it staggers the libido. Clarify your motivation with a checklist that indicates every reason possible for doing it, from actual desire to boredom to lack of self-control. Then clear off the kitchen table and let the fun begin!

• A hilarious present for bachelors, bachelorettes, and significant others
• Accurate whether you’re in it for love or money
• 6 x 9 inches, 60 sheets