The Ultimate Test
Sometimes, people might say one thing and mean something else entirely. Some people are weird like that. These types of tests are always important to pick up on, but they may not be the easiest to solve. We don’t even know what we would do if we were presented with this guy’s situation.
Maybe as a failsafe, you should just buy your wife a cake anyways. Even if it isn’t her birthday. The worst-case scenario is that you’ll have two cakes for her birthday party, and the more the merrier, right? There aren’t a lot of people that would complain about two cakes. This is probably the only way that you are guaranteed to pass the test.