Alfonsius

An Alfonsius is usually incredibly attractive and most of the time can literally audition to become a model. An Alfonsius is typically an athlete which causes for him to have a slender or lean body, making them even more so the eye candy they are. They also have great personalities and are often surrounded by friends and simps, making them easily some of the most popular people in any situation. They are made all the more perfect with their natural intellect and talents, be it in bed or with regards to their academics, an Alfonsius should rarely be single as long as women or gay men exist.

Girl 1: Omg who's that cute guy over there?
Girl 2: Don't you know? That's Alfonsius!
Girl 1: He's so hot! Is he single?
Girl 2: Are you kidding me? There's no way he's single; He's too perfect!

Integrals

Typically used in calculus when trying to find the area under a curve. Integration can be used to find areas, volumes, central points and many useful things, but is easiest to start with finding the area under the curve of a function like this: What is the area under y = f(x)?

Also, due to it being affiliated with calculus, it may make you look smarter than you actually are.

John: Hey did you figure out how to solve question 186b?

Bob: It was easy! You simply had to use integrals!