Husband: "Honey, you know when we did our budget we decided we could afford $200 a month on a new car for me?"
Wife: "Yeah?"
Husband: "Well I went and got that new F-150 crewcab I always wanted. No downpayment. So it's going to cost $800 a month."
Wife: "Wait, wha? What about our budget!?"
Husband: "Well, I have a fix for that. If you'll agree to take $800 away from your shopping, food, entertaining, clothing, etc, and move it to the F-150 account, I'll agree to also have more sex with you."