Unspoken Spousal Agreement No. 2,366: a.k.a. the Likelihood of Getting Any Tonight (Variations on a Theme*): if the night guard ith in, no way in hell mithter.
2,366.1: And if the night guard is not in? Jeez, I was too tired to even put in my night guard, you think I have energy for anything else?
* Only one of approximately 3,000 closely related Agreements that comprise the bulk of the Unspoken Household Regulations, pursuant to the Spousal (Dis)Agreement Act. The exact number of Agreements related to the vetoing of sexual activities is not known due in part to their evanescent and mystifying nature, and in part because the Unspoken Spousal Agreements are for the most part - as the name suggests - unspoken. Some Spouses have hypothesized (sotto voce, of course) that the number fluctuates on a "monthly" basis, although this is hotly contested by other Spouses who a) have very good hearing and b) counter that the probability of encountering willingness to engage in certain adult activities on any given day is inversely proportional to the percentage of household cleaning conducted, over the time period of her choosing, by the Spouse exerting the authority granted her under the SDA to stymie such activities. Also over the time period of her choosing.