"Tiro ao Álvaro" is a samba song composed in 1960 by Brazilian composer and singer Adoniran Barbosa (real name João Rubinato). In his style of the "paulista" samba, it has humorous lyrics written in a popular Portuguese language. Lyrics by Osvaldo Moles
Lyrics
Note: Even though the Portuguese lyrics contain many colloquial features (and at least one hypercorrection, "álvaro" instead of "alvo") that would be considered mistakes according to the standard language norm, they depict the actual language spoken by Paulistanos at the time. Unfortunately these features are lost in the English translation.
References
Tiro ao Álvaro Wikipedia(Text) CC BY-SA