I teach mathematics at University of Helsinki, Finland. Last fall I wanted to include some contemporary applications in the course material, so we simulated a so-called "photobomb" in class. You can see the image below. There are some Lego knights posing formally, but a flying hippo is ruining the shot (Thus the use of the term "photobomb"). I showed the class how to remove such a nuisance using a classical mathematical technique called "Poisson kernel." Results are shown below.