Or, people who have less sex are inclined to lie to hide the fact that they eat grilled cheese, knowing the peer pressure from other cheese eaters to have more sex.
Or, The National Dairy Promotion and Research Board has commissioned yet another bogus study to get people to eat more cheese.
Or, a relatively small number of Vegans are pulling down the numbers for the rest of the non-grilled cheese eating population, because, let's face it, no one wants to have sex with annoying Vegans. Ever.
Or ...
Or...
After sex, she only has enough time to fix me a grilled cheese sandwich before going to work.