Nose Touch
Depending on where you are from, it is customary to perform some sort of ritual when greeting someone either for the first time or in general. This might sound a little strange to someone who has never experienced anything like this, but it can also be very wholesome.
This guy probably wasn’t prepared to touch noses with anyone, especially not a random person he had just met… But putting yourself outside of your comfort zone is always a good place to be because then you are able to experience many wonderful parts of life.