It's a joke.
tar (Tape ARchive) is the name of the program used to create an archive that contains several files, all glued together.
Tar is also a black and sticky substance obtained from hydrocarbons. It translates to catrame in Italian (from your name, I suppose you're Italian).
Therefore, if you take a bunch of files and stick and roll all of them together via the tar program, you obtain a tar ball or tarball.
https://unix.stackexchange.com/questions/225000/where-the-term-tarball-comes-from
tar (Tape ARchive) is the name of the program used to create an archive that contains several files, all glued together.
Tar is also a black and sticky substance obtained from hydrocarbons. It translates to catrame in Italian (from your name, I suppose you're Italian).
Therefore, if you take a bunch of files and stick and roll all of them together via the tar program, you obtain a tar ball or tarball.
https://unix.stackexchange.com/questions/225000/where-the-term-tarball-comes-from