Chavalón is a colloquial and endearing term in Mexican Spanish that refers to a young man or a kid, often implying a sense of youthfulness and perhaps a bit of swagger.
In the song, the artist uses it to assert his identity and potential, singing, "Para que sepan de que está hecho el chavalón" (So they know what this young man is made of). It's a word that adds a touch of regional flavor and personality to the lyrics, making it memorable and interesting for learners.
"El León De La Manada" is a confident, boastful anthem about coming up from nothing and refusing to be doubted.
Adriel Favela paints himself as the toughest one in the group, the "lion of the pack," who hits like a home run and won't be shaken by people talking behind his back. He describes putting in the work himself: grinding until the money came, buying his first car, and finally enjoying small luxuries like new sneakers or a backpack.
The song ends on a relaxed note of having made it, cruising fast on the freeway and lighting a cigarette to unwind. It's a corrido-style celebration of self-made pride and not caring what the haters say.