Flacas (en. Skinny)
/ˈflakas/
Slang Meanings
A person who is very thin, sometimes used as an insult.
That girl is so skinny she looks like a stick.
Esa chica es tan flaca que parece un palo.
It is used to refer to a weak idea or argument.
That justification is very weak.
Esa justificación es muy flaca.