I'll never forget my first time building Gentoo, in school in 2003, on the school laptop.
I started the build in the evening, and in the morning I waited for the current package to download, then closed the lid, put the laptop in the bag, took the train to school, connected to the school wifi, and continued the build in school.
It was fun to try but that's all I did, quickly moved on to something more sane.
Similar, I did this in my first year at uni, and I felt invincible. The whole idea of building your own OS distro from parts is the epitome of a so-called IKEA effect. Simply formatting that hard drive and saying goodbye to my “unique” setup (in reality as vanilla as they come) was difficult!
I started the build in the evening, and in the morning I waited for the current package to download, then closed the lid, put the laptop in the bag, took the train to school, connected to the school wifi, and continued the build in school.
It was fun to try but that's all I did, quickly moved on to something more sane.