Porteño Spanish is the dialect of caste-sha-no (castellano) spoken in Buenos Aires, Argentina and the surrounding areas. It is categorized by an Italian-like pronunciation and colorful Lunfardo slang.Browse Slang Dictionary
Ir A Los Bifes
to get to the point
While not necessarily in reference to hurrying to intercourse, this phrase means "to get to the point" which is usually used in the context of "not messing around" or "getting down and dirty".
"Vamos a los bifes" literally means "let's get to the beef".