You just know when something is a certainty. Manchester United beating Burton Albion in Wednesday's League Cup tie, for instance. Torrential rain as soon as you venture out of the house while wearing shorts. The second bite of an apple being infinitely more disappointing than the first.
And then there's finding a pepper in any box of Papa John's pizza.
In fact, if you didn't find a small, yellow-green, mildly spicy pepper in the box, you'd probably question what was happening in the world.
Sean Muldoon, Papa John's chief ingredient officer, said: "We briefly tested taking it out of our pizza boxes, and you wouldn't believe the uproar that it causes. It was like the world was ending."
Credit: PA
But, that still doesn't explain why they decided to put the pepper in the corner of the box in the first place. So let's have a history lesson...
Before (Papa) John Schnatter became the owner of the international brand, according to Thrillist, he worked as a pot washer at Rocky's Sub Pub in Jeffersonville, Indiana, US.
Muldoon explained: "At Rocky's, they always included a pepper with every pizza. It was just a nice extra touch that their customers really appreciated, and John noticed.
"John always acknowledged how much people loved that inclusion of the pepper, and since day one, he made sure there was a pepper in every one of his pizza boxes too."
A lot of peppers are needed in order to supply each pizza box with its own sentiment. Papa John's is a chain of 5,000 stores worldwide.
For that, they head to Turkey - the third largest pepper producers in the world. Statistics show that the country produces around 1.8 million tons of the fruit each year.
Credit: PA
Muldoon estimates that about 25 percent of the peppers that come out of Turkey are used in a Papa John pizza box.
Initially, when Papa John began his expansion in the late 90s (from a few hundred stores to 1,500) demand outstripped supply.
"It was actually a worldwide pepperoncini shortage, and it was our fault," added Muldoon.
So, what to do with the pepper?
Muldoon said: "The pepper can add another level of heat and taste to the pizza, depending on how you use it, of course.
"There are no rules here. But I like to bite off the tip of the pepper, then spread the juices in a circle around the pie.
"It might not be for everyone, but I enjoy that taste."
After learning their lessons from originally removing the pepper, Muldoon has confirmed, thankfully, that the peppers are here to stay.
Featured Image Credit: PATopics: Pizza